SS501

The name of the band is a combination of letters and numbers that have special meaning. The first “S” stands for "superstar", the second “S” is an abbreviation for "singer", and the combination of 5, 0, and 1 symbolizes "five members united as one forever".{{cite web|title=Scary New! 'Ss501' Meet 무서운 신인! 'ss501'을 만나다|url=http://ystar.cu-media.co.kr/news/news_view.php?no=6098|work=ystar|date=16 June 2005|access-date=9 November 2011|language=ko|url-status=dead|archive-url=https://web.archive.org/web/20120314102238/http://ystar.cu-media.co.kr/news/news_view.php?no=6098|archive-date=March 14, 2012|df=mdy-all}}

Before debuting with SS501, most of the members had some experience in the entertainment world.

Kim Hyun-joong was initially about to debut in a five-member group which included Han Yeon of B2Y (now disbanded) who was to be the leader and Kim would be the youngest member.[http://world.kbs.co.kr/english/program/program_artist_detail.htm?No=105537 "B2Y (비투와이)"] {{Webarchive|url=https://web.archive.org/web/20130725125930/http://world.kbs.co.kr/english/program/program_artist_detail.htm?No=105537 |date=July 25, 2013 }}.KBS. Retrieved 2013-06-17. During 2001 and 2002, while working as a waiter in a family restaurant located at Jamsil-dong, Kim was introduced to a new set up management company CEO. While the group underwent training together, they were asked by their company to debut in China as a Hallyu project group but they rejected the offer and disbanded.

Heo Young-saeng started as a trainee at SM Entertainment for about 2.5 years.[https://web.archive.org/web/20130318123107/http://gokpop.com/news/sm-entertainment-former-trainees::10600.html "SM ENTERTAINMENT FORMER TRAINEES"] Retrieved. 2013-02-18{{cite web|url=https://quainte501.wordpress.com/2015/12/04/1127-trans-as-usual-even-for-now-ss501-heo-youngsaeng/|title=11/27 [Trans] As usual even for now, SS501 Heo YoungSaeng|date=December 4, 2015|website=wordpress.com|access-date=April 6, 2018|archive-date=February 17, 2018|archive-url=https://web.archive.org/web/20180217082737/https://quainte501.wordpress.com/2015/12/04/1127-trans-as-usual-even-for-now-ss501-heo-youngsaeng/|url-status=live}} He then joined DSP Media (formerly known as DSP Entertainment) and trained for three months before debuting as a member of SS501. According to his father, if he had stayed with SM Entertainment as a trainee, he would probably have debuted with Super Junior.{{cite web|url=http://zusaeng501.blogspot.com/2012/06/ss501s-young-saeng-life-story-of-his.html|title=SS501 TRIPLE'S SARANG: SS501's Young Saeng life story of his father|first=Zusli Zusaeng|last=Triple's|date=June 18, 2012|website=zusaeng501.blogspot.com|access-date=April 6, 2018|archive-date=April 6, 2018|archive-url=https://web.archive.org/web/20180406230430/http://zusaeng501.blogspot.com/2012/06/ss501s-young-saeng-life-story-of-his.html|url-status=live}}

Park Jung-min was once a commercial model for condoms.[http://omonatheydidnt.livejournal.com/365222.html "Park JungMin and his Condom CF"] {{Webarchive|url=https://web.archive.org/web/20140124013849/http://omonatheydidnt.livejournal.com/365222.html |date=January 24, 2014 }}.Retrieved 2013-06-1. When he was 13, he was scouted by an agency and was accepted by both DSP Media and S.M. Entertainment. At that time, SM Entertainment told him that they were preparing a new group but the group consisted of many members. According to Park, this was probably Super Junior since he saw them rehearsing too.{{citation needed|date=September 2018}}

Kim Hyung-jun appeared on Ock Joo-hyun's music video, "Catch" in 2004.[http://global.mnet.com/kstar/46209/kim-hyung-jun/video] {{Webarchive|url=https://web.archive.org/web/20130123082703/http://global.mnet.com/kstar/46209/kim-hyung-jun/video|date=January 23, 2013}}Mnet. Retrieved. 2013-03-02 He was also the first one to be included in SS501 which means he had the longest training period.{{cite web|url=http://ss501.dspenter.com/ |title=Archived copy |access-date=2013-06-26 |url-status=dead |archive-url=https://web.archive.org/web/20051124052746/http://ss501.dspenter.com/ |archive-date=November 24, 2005 |language=ko}}

In addition, SS501 has had their first variety show before they officially debuted entitled SS501 M!Pick by MNET. It documented their pre-debut days and the three months after their debut.SS501 M!Pick. MNET. Seoul, 2005. Television.

SS501 debuted on June 8, 2005 along with their first EP, Kyeonggo ({{langx|ko|"경고"}}, "Warning");.SS501. Warning. 2005. CD. Their second mini album, Snow Prince was released in late 2005, five months after their debut.SS501. Snow Prince. 2005. CD. The group earned popularity right away as they won many rookie awards after their debut.{{cite web|url=http://www.ss501.jp/profile.html |title=SS501 |access-date=2013-06-28 |url-status=dead |archive-url=https://web.archive.org/web/20070415221527/http://www.ss501.jp/profile.html |archive-date=April 15, 2007 |language=ja}}

The group was inactive in Korea for most of 2006, although they had their first fan meeting in Japan in April of that year.{{cite web|title=SS501 First Fan Meeting in Japan, "Power Hotties", a Speech Praised SS501 일본 첫 팬미팅 "전원 꽃미남" 일 언론 극찬|url=http://news.newsen.com/news_view.php?uid=200604170733221002|work=Newsen|access-date=17 April 2006|date=16 April 2006|language=ko|archive-date=July 14, 2011|archive-url=https://web.archive.org/web/20110714174438/http://news.newsen.com/news_view.php?uid=200604170733221002|url-status=live}} The reason was due to Heo Young Saeng's throat condition, which required a surgery, thus resulting in a need for time to fully recover.{{cite web|title=SS501, The Main Vocal Concert Heo Young Saeng Laryngeal Surgery Postponed SS501, 메인보컬 허영생 후두 수술로 콘서트 연기 |url=http://www.sportsseoul.com/news/entertain/music/060307/20060307105288052000.htm |work=Sport Seoul |date=3 March 2006 |access-date=9 November 2011 |language=ko |url-status=dead |archive-url=https://web.archive.org/web/20111130182324/http://www.sportsseoul.com/news/entertain/music/060307/20060307105288052000.htm |archive-date=November 30, 2011 }} In mid-2006, they held their first successful concert, "Step Up Concert" in Osaka, Japan.[http://www.yesasia.com/global/ss501-1st-concert-dvd-step-up/1004574293-0-0-0-en/info.html "SS501 1st Concert DVD - STEP UP"] {{Webarchive|url=https://web.archive.org/web/20120628213107/http://www.yesasia.com/global/ss501-1st-concert-dvd-step-up/1004574293-0-0-0-en/info.html |date=June 28, 2012 }}.YesAsia.Retrieved 2013-06-18. In late 2006, they returned to Korea in order to promote their first studio album, which was released on November 10 entitled S.T 01 Now.[http://dspmedia.co.kr/dsp/bbs/board.php?bo_table=dspm12&sca=2006 "DSP Discography 2006"] {{Webarchive|url=https://web.archive.org/web/20141109211801/http://dspmedia.co.kr/dsp/bbs/board.php?bo_table=dspm12&sca=2006 |date=November 9, 2014 }}.Retrieved 2013-06-18. Singles from the album included "Unlock" and "Four Chance".SS501. ST 01 Now. 2006. CD. Alongside promoting the album on various variety and music shows, they also filmed a show on MNet, which was called SS501 SOS.SS501 SOS. MNET. Seoul, 2006. Television.[http://mwave.interest.me/program/program_view.m?searchProgramVO.program_id=129 "[Program] SS501's SOS"] {{Webarchive|url=https://web.archive.org/web/20161120151319/http://mwave.interest.me/program/program_view.m?searchProgramVO.program_id=129 |date=November 20, 2016 }}.Mwave.Retrieved 2013-06-18. The group (excepting Heo Young Saeng, who was recovering from the surgery) also lent their voices for the 2006 animated movie Pi's Story.{{cite web|title=July! SS501 'Pi's Story as' a brilliant screen debut! 7월! SS501 '파이 스토리'로 화려한 스크린 데뷔! |url=http://ystar.cu-media.co.kr/news/news_view.php?no=15466 |work=ystar |date=26 June 2006 |access-date=9 November 2011 |language=ko |url-status=dead |archive-url=https://web.archive.org/web/20110722133253/http://ystar.cu-media.co.kr/news/news_view.php?no=15466 |archive-date=July 22, 2011 }}

File:SS 501 My Style My MTV.jpg

Later in 2007, the group debuted in the Japanese market to further spread their activities and challenge themselves outside Korea. The group at this time released their Japanese single Kokoro, alongside multiple versions, including one with all members and five featuring each member individually.[http://www.yesasia.com/us/kokoro-normal-edition-japan-version/1004858228-0-0-0-en/info.html "Kokoro (Normal Edition)(Japan Version)"] {{Webarchive|url=https://web.archive.org/web/20140606234745/http://www.yesasia.com/us/kokoro-normal-edition-japan-version/1004858228-0-0-0-en/info.html |date=June 6, 2014 }}.YesAsia.Retrieved 2013-06-18. The single debuted at the 5th spot on the Oricon chart, and moved to 3rd spot the next day.[https://www.koreatimes.co.kr/www/news/include/print.asp?newsIdx=7875 "Skull, TVXQ Hitting Overseas Charts"] Korea Times. 7 August 2007. Retrieved 2011-11-02 It was also chosen as an ending theme song for an anime entitled Blue Dragon.SS501. Kokoro. Blue Dragon ED2 OST. 2007. CD.

SS501 appeared in the Japanese drama Hotelier as a cameo seen in episode seven.Hotelier. TV Asahi. South Korea, 2007. Television. Later in September, SS501 released their second single in Japan entitled Distance.{{cite web|url=http://www.ss501.jp/top.php?c=gallery |title=Ss501.jp |access-date=2013-06-22 |url-status=bot: unknown |archive-url=https://web.archive.org/web/20080108124341/http://www.ss501.jp/top.php?c=gallery |archive-date=January 8, 2008 |language=ja}} Finally in October 24, a month later, a full album was released with their self-titled album, SS501.{{cite web|url=http://www.ss501.jp/discography.html |title=Discography ｜ SS501 Official Fan Site |access-date=2013-06-28 |url-status=dead |archive-url=https://web.archive.org/web/20080913074038/http://www.ss501.jp/discography.html |archive-date=September 13, 2008 |language=ja}} SS501 also received the "Newcomer Award" by Japan Gold Disc Award in January 2008; this was the first time for Korean artists to receive this award.[http://www.riaj.or.jp/e/data/gdisc/2008.html "THE 22nd JAPAN GOLD DISC AWARD 2008"] {{Webarchive|url=https://web.archive.org/web/20080627160152/http://www.riaj.or.jp/e/data/gdisc/2008.html |date=June 27, 2008 }} Retrieved.2013-030-05

SS501 returned to Korea with their single Deja Vu, which was released on March 13, 2008.[http://dspmedia.co.kr/dsp/bbs/board.php?bo_table=dspm12&sca=2008 "DSP Discography 2008"] {{Webarchive|url=https://web.archive.org/web/20141109184714/http://dspmedia.co.kr/dsp/bbs/board.php?bo_table=dspm12&sca=2008 |date=November 9, 2014 }}.Retrieved 2013-06-18. The title track was the first song to be promoted, and they began their comeback on music channel M.Net's M Countdown.[http://world.kbs.co.kr/english/entertainment/enter_chart_detail.htm?No=7265 "SS501 Makes a Comeback"] {{Webarchive|url=https://web.archive.org/web/20080321062051/http://world.kbs.co.kr/english/entertainment/enter_chart_detail.htm?No=7265 |date=March 21, 2008 }} KBS World. 13 March 2008. Retrieved 2008-03-26 After their success with their single "Deja Vu", they began to promote their second single, "A Song Calling for You".{{Dead link|date=April 2021}}[http://mwave.interest.me/mnettv/videodetail.m?searchVideoDetailVO.clip_id=81991&META=7&ID=81991 "A Song Calling for You"] {{Webarchive|url=https://web.archive.org/web/20140726170329/http://mwave.interest.me/mnettv/videodetail.m?searchVideoDetailVO.clip_id=81991&META=7&ID=81991 |date=July 26, 2014 }}.Mwave.Retrieved 2013-06-18. They performed their Goodbye Stage on Music Bank in June 2008, to return to Japanese activities.[http://mwave.interest.me/mnettv/videodetail.m?searchVideoDetailVO.clip_id=83075 "DeJa Vu+A Song Calling for You"] {{Webarchive|url=https://web.archive.org/web/20140726162334/http://mwave.interest.me/mnettv/videodetail.m?searchVideoDetailVO.clip_id=83075 |date=July 26, 2014 }}.Mwave.Retrieved 2013-06-18. Their third Japanese single was released on June 18, 2008 entitled Lucky Days. Then, for a short period of time, they return in Korea and released a mini album entitled, Find.{{Cite web |last=김형우 |date=2008-07-29 |title=SS501 오프라인 음반판매 소리없는 1위 행진 |trans-title=SS501 Offline Record Sales Marches No.1 |url=https://www.newsen.com/news_view.php?uid=200807291705561002 |access-date=2025-05-20 |website=뉴스엔 |language=ko}}

On October 4, the group represented Korea to perform at the Seoul World Cup Stadium, and received the Best Asian Artist Award at the 5th Asia Song Festival, organised by Korea Foundation for International Culture Exchange.[http://english.kofice.or.kr/d40_asia/d40_asia_02_2008y_2.asp "5th Asia Song Festival"] {{webarchive|url=https://web.archive.org/web/20110816082943/http://english.kofice.or.kr/d40_asia/d40_asia_02_2008y_2.asp |date=August 16, 2011 }} KOFICE. 4 October 2008. Retrieved 2011-10-26{{in lang|ko}}[http://star.mt.co.kr/view/stview.php?no=2008091110204789145&type=1&outlink=1 "SS501도 아시아송페스티벌 참가 확정"] {{Webarchive|url=https://web.archive.org/web/20131213130456/http://star.mt.co.kr/view/stview.php?no=2008091110204789145&type=1&outlink=1 |date=December 13, 2013 }}.Star.Retrieved 2013-06-22.

On October 2, 2008, Kim Hyun-joong was cast for his first lead-acting role as 'Yoon Ji-hoo' in the Korean version of Hana Yori Dango, named Boys Over Flowers,Boys Over Flowers. Dir. Ki-sang Jun. Perf. Ku Hye-sun, Lee Min-ho, Kim Hyun Joong, Kim Bum, and Kim Joon. 2009. TV Series. a role for which he won the "Most Popular Actor Award" at the Seoul International Drama Awards 2009{{cite web|url=http://www.seouldrama.org/EN/archive/AwardsPopular2009.aspx|title=2009 Popular Prize winners|work=Seoul International Drama Awards|access-date=2013-01-02|archive-date=October 4, 2013|archive-url=https://web.archive.org/web/20131004215940/http://www.seouldrama.org/EN/archive/AwardsPopular2009.aspx|url-status=dead}} and the "Popularity Award" at the 45th Baeksang Arts Awards.{{cite web |url=http://isplus.live.joinsmsn.com/award/bs/2011/history/h_history.asp?menuid=1&R=45 |title=45th PaekSang Arts Awards winners list |work=PaekSang Arts Awards |publisher=joinsmsn |access-date=2013-01-02 |language=ko |url-status=usurped |archive-url=https://web.archive.org/web/20120419004923/http://isplus.live.joinsmsn.com/award/bs/2011/history/h_history.asp?menuid=1&R=45 |archive-date=April 19, 2012 |df=mdy-all }} The series was broadcast on KBS during the first half of 2009.[http://www.kbs.co.kr/drama/f4/ "Boys Over Flowers official website"] {{Webarchive|url=https://web.archive.org/web/20171112063156/http://www.kbs.co.kr/drama/f4/ |date=November 12, 2017 }}.KBS.Retrieved 2013-06-18. During this time, around early 2009, Park Jung-min was also cast for his musical debut in Grease as "Danny Park",{{usurped|1=[https://web.archive.org/web/20120405232903/http://koreajoongangdaily.joinsmsn.com/news/article/article.aspx?aid=2908014 "SS501, the 1st Asia Tour Persona in Seoul"]}} Joongang Daily. 29 July 2010. Retrieved 2011-10-31 where he received the award "Best New Musical Talent" by the Golden Ticket Awards.{{in lang|ko}}[http://ticket.interpark.com/goldenticket/2009/2009Goldenticket.asp?Tab=3 "Golden Ticket Voting/Nominees (2009)"] {{webarchive|url=https://web.archive.org/web/20131029201425/http://ticket.interpark.com/goldenticket/2009/2009Goldenticket.asp?Tab=3 |date=October 29, 2013 }} Interpark. Retrieved 2012-11-21. While both Kim and Park were busy with their schedules, the remaining three members formed 'SS501 Project Group' with Heo Young-saeng as the leader. The 'Project Group' was initially to be named after their fan club 'Triple S', however before the sub-unit group debut it was decided to retain 'SS501' name out of respect to the absent members. They released a project album named U R Man in November 2008, with a high tempo dance track "U R Man",SS501. UR Man. 2008. CD. which the three remaining SS501 members promoted by themselves, with the exception of some special performances that included all five band members. The project group also performed "U R Man" in episode four of Boys Over Flowers, where they appeared for a cameo performance. Moreover, they contributed to the Boys Over Flowers soundtrack with "내 머리가 나빠서" (Because I'm Stupid) track, in which they received multiple awards such as "Song of the Month (February)", "Best OST Award", and "Best TV Drama Song of the Year" just to name a few.{{Cite web |last=이언혁 |date=2009-10-23 |title=2009 엠넷아시안뮤직어워드(MAMA) 11월 21일 개최(수상후보포함) |trans-title=2009 Mnet Asian Music Awards (MAMA) will be held on November 21st (including award nominees) |url=https://www.newsen.com/news_view.php?uid=200910231941581001 |access-date=2025-05-20 |website=2009 엠넷아시안뮤직어워드(MAMA) 11월 21일 개최(수상후보포함) - 손에 잡히는 뉴스 눈에 보이는 뉴스 - 뉴스엔 |language=ko}}

File:SS501HKFM 2.jpg

SS501 released their official second Japanese studio album, All My Love, on May 13, 2009.SS501. All My Love. 2009. CD. Although they were doing a cappella performances during their past years, it was their first time to record and include an a cappella title track to their album, "All My Love". A promotional tour was held in Japan in support of the album.

On July 21, 2009, they released their sixth EP, Solo Collection, which consisted of the individual members' songs. It also includes a mini-drama starring SS501, particularly Kim Hyun-joong and Park Jung-min.[http://dspmedia.co.kr/dsp/bbs/board.php?bo_table=dspm12&sca=2009 "DSP discography 2009] {{Webarchive|url=https://web.archive.org/web/20141109211817/http://dspmedia.co.kr/dsp/bbs/board.php?bo_table=dspm12&sca=2009 |date=November 9, 2014 }}.Retrieved 2013-06-18. In August 2009, they embarked on their 1st Asia Tour Persona, with two concerts in Seoul. It was followed by fifteen concerts in Japan, Taiwan, Hong Kong, Thailand, China, Malaysia, and Singapore.{{usurped|1=[https://web.archive.org/web/20120405232903/http://koreajoongangdaily.joinsmsn.com/news/article/article.aspx?aid=2908014 "SS501, the 1st Asia Tour Persona in Seoul"]}} Joongang Daily. 29 July 2009. Retrieved 2011-10-31

The group's seventh EP Rebirth was released in two parts: in a limited and a full edition. The former was released on October 20,{{cite web|url=http://www.asiae.co.kr/news/view.htm?sec=ent9&idxno=2009101214193207425|title=SS501 releases new mini-album jacket|last=Park Kun|first=Ouc|date=12 October 2009|work=Asiae|access-date=31 October 2009|archive-date=March 19, 2012|archive-url=https://web.archive.org/web/20120319045046/http://www.asiae.co.kr/news/view.htm?sec=ent9&idxno=2009101214193207425|url-status=live}} and the latter on October 22.{{cite web|url=http://joynews.inews24.com/php/news_view.php?g_serial=454328&g_menu=702120|title=SS501, '타투'로 짐승돌 변신?|work=JoyNews|date=October 31, 2009 |language=ko|access-date=31 October 2009|archive-date=October 4, 2011|archive-url=https://web.archive.org/web/20111004121755/http://joynews.inews24.com/php/news_view.php?g_serial=454328&g_menu=702120|url-status=live}} SS501 promoted the album with the single "Love Like This", a track collaborated by Steven Lee, Sean Alexander, and Drew Ryan Scott. The single was also sung by Varsity Fanclub, Scott's group, in English lyrics with the same title single, which was released later in 2010.Varsity Fanclub. Love Like This. 2010. CD.

In 2010, SS501 continued their 1st Asia Tour Persona concert in Thailand before holding their final encore concert, on February 27, in Seoul to conclude the tour.[http://www.asiae.co.kr/news/view.htm?idxno=2010030209382338376 "S5501 speaks ahead of "PERSONA" encore show"] {{Webarchive|url=https://web.archive.org/web/20120402054302/http://www.asiae.co.kr/news/view.htm?idxno=2010030209382338376 |date=April 2, 2012 }} 10 Asia. 2 March 2010. Retrieved 2011-10-31 Although the release of a new EP was planned for May 1, 2010 (a nod towards "501" in the group's name, or as they call it "501" day), the date was pushed back in order to "add finishing touches". They performed at the 2010 Dream Concert later that month. Because Kim Hyun-joong was still recovering from a previous injury, they sang two ballads instead of the rumored comeback track.[http://www.hancinema.net/kim-hyun-joong-gets-into-car-accident-ok-for-comeback-23406.html "Kim Hyun-joong gets into car accident, ok for comeback"] {{Webarchive|url=https://web.archive.org/web/20160322010838/http://www.hancinema.net/kim-hyun-joong-gets-into-car-accident-ok-for-comeback-23406.html |date=March 22, 2016 }}. Hancinema. Retrieved 2013-06-19.

Their last EP before the contract's expiration, entitled Destination, was released on May 24, 2010.SS501. Destination. 2010. CD. The lead track, "Love Ya", composed by Steven Lee, is a song accompanied by an orchestra, and blended with a piano melody.{{Dead link|date=April 2021}}[http://dspmedia.co.kr/dsp/bbs/board.php?bo_table=dspm12&sca=2010 "DSP discography 2010"] {{Webarchive|url=https://web.archive.org/web/20141109210959/http://dspmedia.co.kr/dsp/bbs/board.php?bo_table=dspm12&sca=2010 |date=November 9, 2014 }}.Retrieved 2013-06-19. Their first win for the lead track, "Love Ya", was on KBS' Music Bank, on June 11.{{cite news|last=Hong|first=Lucia|title=Boy bands take control of TV music programs|url=http://www.asiae.co.kr/news/view.htm?idxno=2010061410374606680|access-date=29 June 2012|newspaper=10 Asia|date=14 June 2010|archive-date=November 4, 2013|archive-url=https://web.archive.org/web/20131104024654/http://www.asiae.co.kr/news/view.htm?idxno=2010061410374606680|url-status=live}} On June 18, DSP announced that SS501 would end their "Love Ya" promotions due to the expiration of their contract on June 7, 2010, five years after their debut.Kang Seung-hun [http://www.asiae.co.kr/news/view.htm?idxno=2010082617384923618 "Kim Hyun-joong says SS501 has not disbanded"] {{Webarchive|url=https://web.archive.org/web/20120402054233/http://www.asiae.co.kr/news/view.htm?idxno=2010082617384923618 |date=April 2, 2012 }} 10 Asia. 26 August 2010. Retrieved 2011-10-31

During the second half of 2010, upon the expiration of the group's contract with DSP Media, all the members signed with other management companies. Kim Hyun-joong signed with KeyEast, Park Jung-min joined CNR Media, Kim Hyung-jun with S-Plus Entertainment. Heo Young-saeng and Kim Kyu-jong both signed with B2M Entertainment. {{Cite web |last=길혜성 |date=2010-10-14 |title=SS501 김규종·허영생, 이효리 소속사와 전격 계약 |trans-title=SS501 Kim Kyu-jong, Heo Young-saeng, and Lee Hyo-ri's agency signed a surprise contract |url=https://www.starnewskorea.com/stview.php?no=2010101409131966536&type=1&outlink=1 |access-date=2025-05-20 |website=스타뉴스 |language=ko}}{{Cite web |last=박건욱 |date=2010-08-27 |title=김형준 소속사 에스플러스 "SS501 해체는 없다" 공식입장 |trans-title=Kim Hyung-joon's agency, Splus, officially stated, "There is no dismantling of SS501." |url=https://www.asiae.co.kr/news/view.htm?idxno=2010082709321877674 |access-date=2025-05-20 |website=아시아경제 |language=ko}}{{Cite web |last=김진도 |date=2010-08-10 |title=SS501 박정민 새소속사 CNR 이적…‘꽃남’ 제작자 손잡다 |trans-title=SS501 Park Jung-min's new agency CNR transferred...to join hands with the producer of 'Boys Over The Flowers' |url=https://nownews.seoul.co.kr/news/newsView.php?id=20100810603044 |access-date=2025-05-20 |website=나우뉴스 |language=ko}}{{Cite web |last=뉴스엔 엔터테인먼트부 |date=2010-06-30 |title=김현중, SS501 탈퇴+배용준 키이스트 이적=가수 아닌 연기활동 주력하나? |trans-title=Kim Hyun-joong withdraws from SS501 + Bae Yong-joon transfers to Keist = Are you focusing on acting activities, not singers? |url=https://www.newsen.com/news_view.php?uid=201006300026451010 |access-date=2025-05-20 |website=김현중, SS501 탈퇴+배용준 키이스트 이적=가수 아닌 연기활동 주력하나? - 손에 잡히는 뉴스 눈에 보이는 뉴스 - 뉴스엔 |language=ko}}

Kim Hyun-joong explained in an interview that, at the time, there wasn't a company that would accept them as a whole, thus the group decided to take the chance to focus on their solo activities. In October 2010, Kim Hyung-jun announced that SS501 was planning release a new album in 2011{{in lang|ko}} [http://sportsworldi.segye.com/Articles/EntCulture/Article.asp?aid=20101019005065&subctg1=10&subctg2=00 "SS501 to return in 2012 김형준 '내년 SS501로 찾아뵐게요'"] {{Webarchive|url=https://web.archive.org/web/20130818024343/http://sportsworldi.segye.com/Articles/EntCulture/Article.asp?aid=20101019005065&subctg1=10&subctg2=00 |date=August 18, 2013 }} Sport World. 20 October 2010. Retrieved 2011-11-09 but was pushed back, probably because of their busy schedules.

With the group on hiatus, the members pursued solo activities.

Kim Hyun-joong joined KeyEast after leaving DSP Entertainment and started promoting both as an actor and singer. His first acting project was Korean drama Playful Kiss, that was broadcast on MBC in September 2010. He played the leading role of "Baek Seung Jo" in the drama.{{Cite web |last=홍정원 |date=2010-07-08 |title=김현중 ‘장난스런 키스’ 주인공 확정..‘꽃남’ 명성 이을까? |trans-title=Kim Hyun-joong's 'Playful Kiss' protagonist has been confirmed... Is it the reputation of 'Flower Boy'? |url=https://www.newsen.com/news_view.php?uid=201007082048021001 |access-date=2025-05-20 |website=뉴스엔 |language=ko}} He then released his debut solo album Break Down on June 8, 2011 and it exceeded 70,000 pre-ordered copies in ten days.[http://english.chosun.com/site/data/html_dir/2011/06/01/2011060100749.html "Kim Hyun-joong's 1st Solo Album Exceeds 70,000 Pre-orders"] {{Webarchive|url=https://web.archive.org/web/20110914121017/http://english.chosun.com/site/data/html_dir/2011/06/01/2011060100749.html |date=September 14, 2011 }} Chosun Ilbo. 1 June 2011. Retrieved 2011-10-25 The album was certified gold in Korea and was certified platinum in Taiwan. The album also debuted at #1 in oricon weekly foreign album charts. In May 2015, Kim Hyun-joong officially enlisted for his mandatory military service.{{Cite news|url=http://english.yonhapnews.co.kr/culturesports/2015/05/05/0701000000AEN20150505002800315.html|title=K-pop star Kim Hyun-joong to enlist in Army|date=2015-05-05|work=Yonhap News Agency|access-date=2018-04-16|language=en|archive-date=April 16, 2018|archive-url=https://web.archive.org/web/20180416073637/http://english.yonhapnews.co.kr/culturesports/2015/05/05/0701000000AEN20150505002800315.html|url-status=live}}

Heo Young-saeng and Kim Kyu-jong held a joint fanmeeting, Kim Kyu-jong & Heo Young-saeng Story In Seoul on December 4, which continued in Hong Kong, Japan and countries across Asia.{{in lang|ko}} [http://news.nate.com/view/20101204n04615 "김규종 SS501 앨범은 내년쯤 계획"] {{Webarchive|url=https://web.archive.org/web/20130817175020/http://news.nate.com/view/20101204n04615 |date=August 17, 2013 }} Nate News. 4 December 2010. Retrieved 2011-11-09{{in lang|ko}} [http://news.nate.com/view/20101204n04571 "김규종 "SS501 음반은 다음해로 계획 中" 발표"] {{Webarchive|url=https://web.archive.org/web/20130817182429/http://news.nate.com/view/20101204n04571 |date=August 17, 2013 }} Nate News. 4 December 2010. Retrieved 2011-11-09 Heo Young-saeng was scheduled to launch his solo singing career on April 28, 2011, but had to postpone because he pulled the ligaments on his right hand during dance practice.Hong, Lucia [http://www.asiae.co.kr/news/view.htm?idxno=2011042116385130226 SS501 "Heo Young-saeng to postpone solo activities"] {{Webarchive|url=https://web.archive.org/web/20120402054338/http://www.asiae.co.kr/news/view.htm?idxno=2011042116385130226 |date=April 2, 2012 }} 10 Asia. 21 April 2011. Retrieved 2011-10-31 His debut solo mini album, Let It Go was released on May 12, 2011, which features Kim Kyu-jong and Hyuna of girl group 4minute.Kim, Heidi [http://www.asiae.co.kr/news/view.htm?idxno=2011050415344870417 "SS501 Heo Young-saeng to release solo album on May 12"] {{Webarchive|url=https://web.archive.org/web/20120402054358/http://www.asiae.co.kr/news/view.htm?idxno=2011050415344870417 |date=April 2, 2012 }} 10 Asia. 4 May 2011. Retrieved 2011-10-31 The album peaked at number one on Gaon's album chart for the week starting on May 8, 2011.Kim, Heidi [http://10.asiae.co.kr/Articles/new_view.htm?sec=ent10&a_id=2011051914413428442 "Gaon Weekly Album Chart: 8-14 May 2011"] {{Webarchive|url=https://web.archive.org/web/20140203181521/http://10.asiae.co.kr/Articles/new_view.htm?sec=ent10&a_id=2011051914413428442 |date=February 3, 2014 }} 10 Asia. 19 May 2011. Retrieved 2011-11-13 In November and December, Heo made his theatrical musical debut in The Three Musketeers.[http://www.soompi.com/2011/09/15/ss501s-heo-young-saeng-and-oh-won-bin-will-star-in-the-three-musketeers-musical/ "SS501′s Heo Young Saeng and Oh Won Bin Will Star in the "Three Musketeers" Musical"] {{Webarchive|url=https://web.archive.org/web/20130921060803/http://www.soompi.com/2011/09/15/ss501s-heo-young-saeng-and-oh-won-bin-will-star-in-the-three-musketeers-musical/ |date=September 21, 2013 }}.soompi. Retrieved. 2013-02-18. Afterwards on December 28, just before the end of the year, Heo released a soundtrack song entitled "The Words On My Lips" for Fermented Family, a Korean drama.{{in lang|ko}}[http://news.nate.com/view/20111227n08999?return_sq=1 "허영생 ‘발효가족’ OST ‘입술에 맺힌 말’ 공개, 달달 목소리 기대↑] {{Webarchive|url=https://web.archive.org/web/20210424055109/https://news.nate.com/view/20111227n08999?return_sq=1 |date=April 24, 2021 }} 27 December 2011. Retrieved 2011-12-28 Later in 2012, Heo joined the cast of KBS2 sitcom I Need a Fairy (or Sent From Heaven) in episode 23, playing the role "Heo Young Saeng/ Kaki".{{in lang|ko}}[http://www.newsen.com/news_view.php?uid=201202021458001001&search=title&searchstring=%C7%E3%BF%B5%BB%FD SS501 허영생 ‘선녀가 필요해’로 연기자 출사표] {{Webarchive|url=https://web.archive.org/web/20160304001434/http://www.newsen.com/news_view.php?uid=201202021458001001&search=title&searchstring=%C7%E3%BF%B5%BB%FD |date=March 4, 2016 }} 2 February 2012 A month later, he released a soundtrack of the said drama entitled "Love Song".Sent From Heaven OST. 2012. CD. Heo Young Saeng enlisted in the army on October 31, 2013.{{Cite web |last=최지예 |first= |title='입대' 허영생, "드디어 가는군…몸 건강히 잘 다녀오겠다 " |trans-title="I'm joining the army." Heo Young-saeng said, "I'm finally going..."I'll be back safely" |url=https://www.mydaily.co.kr/page/view/2013103111534101130 |access-date=2025-05-20 |website=마이데일리 |language=ko}} After serving his mandatory military service as a police officer, he was discharged on July 30, 2015.{{Cite web |last=전윤희 |date=2015-07-30 |title=허영생 오늘(30일) 전역, 김동완·김형준 등과 한솥밥 |trans-title=Heo Young-saeng is discharged from the military today (30th), and Kim Dong-wan and Kim Hyung-jun |url=https://biz.heraldcorp.com/article/587342 |access-date=2025-05-20 |website=헤럴드경제 |language=ko}}

Kim Kyu-jong made his musical debut in Goong: Musical, playing the lead role of Crown Prince Lee Shin, in Kyoto, Japan from June 11 to July 1,Kim, Heidi [http://www.asiae.co.kr/news/view.htm?idxno=2011041216433945628 "SS501 Kim Kyu-jong to star in musical 'Goong'"] {{Webarchive|url=https://web.archive.org/web/20130817184032/http://www.asiae.co.kr/news/view.htm?idxno=2011041216433945628 |date=August 17, 2013 }} 10 Asia. 12 April 2011. Retrieved 2011-11-19 and debuted as a solo artist in September 2011 with mini album Turn Me On.Hong, Lucia [http://www.asiae.co.kr/news/view.htm?idxno=2011091910552935359 "Kim Kyu-jong to begin solo singing career with mini-album next week"] {{Webarchive|url=https://web.archive.org/web/20120402054210/http://www.asiae.co.kr/news/view.htm?idxno=2011091910552935359 |date=April 2, 2012 }} 10 Asia. 19 September 2011. Retrieved 2011-10-29 The album features rap by Heo Young-saeng in dance track "My Love", and Yang Jiwon of Spica in Yesterday music video. On July 23, Kim reported to the recruit training center of the 35th division in Jeonju, North Jeolla Province for four weeks of basic training. They further explained that he was originally exempted because he has a hepatitis B carrier. However, since there was a change in the conscription law, he was eligible to serve non-active duty as a public service worker.{{cite news|title=SS501′s Kim Kyu Jong joins the army on July 23|url=http://star.mt.co.kr/stviewEng.php?type=3&no=2012070216280782989|access-date=4 July 2012|newspaper=Star News|date=2 July 2012|url-status=dead|archive-url=https://web.archive.org/web/20140602200325/http://star.mt.co.kr/stviewEng.php?type=3&no=2012070216280782989|archive-date=June 2, 2014|df=mdy-all}} On July 18, Kim released a limited edition, and later on a normal edition, mini-album Meet Me Again dedicated to his fans before his enlistment.Kim Kyu Jong. Meet Me Again. 2012. CD.{{cite news|last=Lee|first=Tae-ho|title=SS501's Kim Kyu-jong to release limited edition of mini-album before enlistment|url=http://www.asiae.co.kr/news/view.htm?idxno=2012071114404629715|access-date=23 July 2012|newspaper=10 Asia|date=11 July 2012|archive-date=August 8, 2014|archive-url=https://web.archive.org/web/20140808054846/http://www.asiae.co.kr/news/view.htm?idxno=2012071114404629715|url-status=live}}

Park Jung-min's comeback single, Not Alone, was originally planned to be released on November 25, 2010, but was pushed back to January 20, 2011.Kim, Heidi [http://www.asiae.co.kr/news/view.htm?idxno=2010112218011084470 "Singer Park Jung-min takes off for fan meeting in Japan"] {{Webarchive|url=https://web.archive.org/web/20130817180623/http://www.asiae.co.kr/news/view.htm?idxno=2010112218011084470 |date=August 17, 2013 }} 10 Asia. 20 December 2010. Retrieved 2011-11-19 He, then, released his first mini-album The, Park Jung Min on April 1, 2011.{{cite web | title=Wara Wara THE, PARK JUNGMIN [Limited Edition] | url=https://www.amazon.co.jp/Wara-THE-PARK-JUNGMIN-%E5%AE%8C%E5%85%A8%E7%94%9F%E7%94%A3%E9%99%90%E5%AE%9A%E7%9B%A4/dp/B004WM8GUI/ref=pd_sim_m_2 | work=amazon | language=ja | access-date=November 1, 2017 | archive-date=April 24, 2021 | archive-url=https://web.archive.org/web/20210424055032/https://www.amazon.co.jp/Wara-THE-PARK-JUNGMIN-%E5%AE%8C%E5%85%A8%E7%94%9F%E7%94%A3%E9%99%90%E5%AE%9A%E7%9B%A4/dp/B004WM8GUI/ref=pd_sim_m_2 | url-status=live }} Park was cast in a Japanese musical Bonds Of Boys as an exchange student from November 18 to 23, 2011.Bonds of Boys. Tokyo New National Theatre, Tokyo. 2011. Performance. He also expanded his experience in acting by being cast in the Japanese drama, Love Song in August.{{in lang|ja}}[http://lismo-drama.jp/8lovesong/ "Love Song In August Official Homepage"] {{webarchive|url=https://web.archive.org/web/20130509141505/http://lismo-drama.jp/8lovesong/ |date=May 9, 2013 }} Lismo-drama.jp. Retrieved 2012-08-14. He also contributed to KBS2's The Princess' Man OST in August, where he sang "Missing You" composed by Park Jung Wook.[http://www.yesasia.com/us/the-princess-man-ost-kbs-tv-drama/1024979395-0-0-0-en/info.html "The Princess' Man OST (KBS TV Drama)"] {{Webarchive|url=https://web.archive.org/web/20130925075706/http://www.yesasia.com/us/the-princess-man-ost-kbs-tv-drama/1024979395-0-0-0-en/info.html |date=September 25, 2013 }}.YesAsia.Retrieved 2013-06-20.

Kim Hyung-jun signed with Avex Entertainment for his Japanese activities in January 2011.{{in lang|ja}} [http://kimhyungjun.jp/news/view.asp?seq=365 "SS501’s Kim Hyung Jun signs with Avex, to release album in Japan キム・ヒョンジュン、待望の日本ソロ・デビュー"] {{webarchive|url=https://web.archive.org/web/20120425131140/http://kimhyungjun.jp/news/view.asp?seq=365 |date=April 25, 2012 }} 22 January 2011. Retrieved 2011-11-02 On March 8, 2011, Kim finally released his debut solo mini album My GirlHong, Lucia [http://www.asiae.co.kr/news/view.htm?idxno=2011030809504505302 "Kim Hyung-jun reveals first solo album today"] {{Webarchive|url=https://web.archive.org/web/20120402054523/http://www.asiae.co.kr/news/view.htm?idxno=2011030809504505302 |date=April 2, 2012 }} 10 Asia. 8 March 2011. Retrieved 2011-11-02 with music videos for the two lead tracks "oH! aH!" and "Girl", in which Park Jung-min visited him during the music video shoot for the latter.{{in lang|ko}} [http://news.naver.com/main/read.nhn?mode=LSD&mid=sec&sid1=106&oid=109&aid=0002183142 "SS501′s Park Jung Min visits Kim Hyung Joon on his MV film set"] {{Webarchive|url=https://web.archive.org/web/20130818072228/http://news.naver.com/main/read.nhn?mode=LSD&mid=sec&sid1=106&oid=109&aid=0002183142 |date=August 18, 2013 }} Naver News. 27 February 2011. Retrieved 2011-22-06 A Japanese version was released on April 6, 2011 with two bonus tracks of Japanese versions of the two lead tracks.{{in lang|ja}}[http://avexnet.jp/id/kimhy/discography/product/AVCD-38261.html "My Girl (Japanese Edition) info"] {{webarchive|url=https://web.archive.org/web/20120406194918/http://avexnet.jp/id/kimhy/discography/product/AVCD-38261.html |date=April 6, 2012 }} Avex Entertainment. 6 April 2011. Retrieved 2011-11-02 On July 27, Kim released his first Japanese single, Long Night.[http://www.avexnet.or.jp/kimhyungjun/disc/ "Discography"] {{Webarchive|url=https://web.archive.org/web/20121020103949/http://www.avexnet.or.jp/kimhyungjun/disc/ |date=October 20, 2012 }} Kim Hyung-jun's official Japanese website by Avex Trax. Retrieved 2012-11-16. {{in lang|ja}} In October 2011, Kim made his theater debut in the romantic comedy musical Caffeine, where he played as a barista.[http://www.dkpopnews.net/2010/10/news-ss501s-kim-hyung-joon-cast-as-lead.html "SS501’s Kim Hyung Joon cast as the lead in “Caffeine”…first steps into musicals"] {{Webarchive|url=https://web.archive.org/web/20141129133306/http://www.dkpopnews.net/2010/10/news-ss501s-kim-hyung-joon-cast-as-lead.html |date=November 29, 2014 }}.dkpopnews. Retrieved 2013-06-20. After his acting debut on Black City, Kim starred on his first main lead role in KBS Drama's romantic comedy series, My Shining Girl in March, playing the role of "Kang-min".[http://enewsworld.interest.me/enews/contents.asp?idx=2665&idxType=News&trendKeyword=My%20Shining%20Girl "Kim Hyung Jun Goes All Out For Bed Scene"]{{Dead link|date=December 2023 |bot=InternetArchiveBot |fix-attempted=yes }}.Enewsworld.Retrieved 2013-06-16.

During SS501's eight anniversary, SS501 members posted the same video on YouTube together to celebrate and greet their fans.[http://www.allkpop.com/article/2013/06/ss501-celebrate-their-8th-anniversary-together "SS501 celebrate their 8th anniversary together!"] {{Webarchive|url=https://web.archive.org/web/20130610174910/http://www.allkpop.com/article/2013/06/ss501-celebrate-their-8th-anniversary-together |date=June 10, 2013 }}.Allkpop.Retrieved 2013-06-15. Kim Hyun Joong was not able to be in the video at that time because he had a shooting on his variety show, Barefoot Friends.[http://news.sportsseoul.com/read/entertain/1194315.htm "데뷔 8주년 SS501, 팬들에게 감사의 영상 메시지 전달 눈길"] {{webarchive|url=https://web.archive.org/web/20131220063330/http://news.sportsseoul.com/read/entertain/1194315.htm |date=December 20, 2013 }}.SportsSeoul.Retrieved 2013-06-15. However, Kim Hyun Joong still talked about his debut on his Korea fanmeeting entitled 2013 KHJ Show - Party People, held at the same day of their anniversary.2013 KHJ Show - Party People. Seoul. 2013. Performance.

On October 26, 2013, Heo had his first and farewell concert in Seoul entitled "2013 Heo Young Saeng Seoul Concert 0513 My Story",{{Cite web |url=http://mwave.interest.me/enewsworld/en/article/49413/heo-young-saeng-goes-to-the-army |title="Heo Young Saeng to Enlist Today (10/31)". Mwave. Retrieved 2013-12-13. |access-date=May 30, 2014 |archive-date=December 5, 2014 |archive-url=https://web.archive.org/web/20141205050829/http://mwave.interest.me/enewsworld/en/article/49413/heo-young-saeng-goes-to-the-army |url-status=dead }} which marked the first time that all five members of SS501 appeared together on one stage and performed together as a group again after three years, as seen at the UNIQLO AX Hall.{{Cite web |url=http://www.kpopstarz.com/articles/46943/20131026/ss501-reunite-heo-young-saeng-solo-concert.htm |title="K-pop's SS501 Together Again on Stage at Young Saeng's Solo Concert, Proper Send-off Before Military Enlistment". Kpopstarz. Retrieved 2013-12-13. |access-date=May 30, 2014 |archive-date=December 14, 2013 |archive-url=https://web.archive.org/web/20131214045238/http://www.kpopstarz.com/articles/46943/20131026/ss501-reunite-heo-young-saeng-solo-concert.htm |url-status=live }}

In 2014, SS501 released "SS501 Best Collection" album in Japan on September. The compilation set features a total of two albums, one featuring their greatest Korean-language hits and the other featuring their Japanese-language hits. Volume One features 26 Korean-language songs. It comes with a bonus DVD containing 16 music videos[http://www.yesasia.com/us/ss501-best-collection-vol-1-2cds-dvd-japan-version/1035851002-0-0-0-en/info.html "SS501 Best Collection Vol.1 (2CDs+DVD)(Japan Version)"] {{Webarchive|url=https://web.archive.org/web/20140911001939/http://www.yesasia.com/us/ss501-best-collection-vol-1-2cds-dvd-japan-version/1035851002-0-0-0-en/info.html |date=September 11, 2014 }}. YESASIA. Retrieved 2014-06-16. while, Volume Two features 17 Japanese-language songs. It comes with a bonus DVD containing three music videos and additional bonus content.[http://www.yesasia.com/us/ss501-best-collection-vol-2-album-dvd-japan-version/1035851005-0-0-0-en/info.html "SS501 Best Collection Vol.2 (ALBUM+DVD)(Japan Version)"] {{Webarchive|url=https://web.archive.org/web/20140910195539/http://www.yesasia.com/us/ss501-best-collection-vol-2-album-dvd-japan-version/1035851005-0-0-0-en/info.html |date=September 10, 2014 }}. YESASIA. Retrieved 2014-06-16. September 2, both "SS501 Best Collection" versions ranked on the Oricon Albums Chart at number eleven and thirteen respectively.[http://www.oricon.co.jp/rank/ja/d/2014-09-02/more/3/ "September 2 2014: Oricon Chart ranking"] {{Webarchive|url=https://web.archive.org/web/20140910234439/http://www.oricon.co.jp/rank/ja/d/2014-09-02/more/3/ |date=September 10, 2014 }}. ORICON CHARTS. Retrieved 2014-09-09. Later that year, Kyujong was discharged from the military.{{in lang|ko}}[http://news.naver.com/main/read.nhn?mode=LSD&mid=sec&oid=111&aid=0000387326&sid1=001&lfrom=twitter "SS501 김규종, 오늘(22일) 소집해제…팬들 곁으로"] {{Webarchive|url=https://web.archive.org/web/20210424055035/https://entertain.naver.com/read?oid=111&aid=0000387326 |date=April 24, 2021 }}. Naver. Retrieved 2014-07-27.

On January 17, 2015, SS501's special project group consisting of Young Saeng, Kyu Jong, and Hyung Jun performed on stage together at the Musical & Talk Concert, organized by the Seoul Police Promotional Team, which is where Heo Young Saeng had performed his military duties.{{Cite web|title=SS501 김형준, 17일 공연 예고 "허영생 김규종 내일 봐"|url=https://news.nate.com/view/20150116n20602?mid=e0101|access-date=2021-04-24|website=네이트뉴스|language=ko|archive-date=April 24, 2021|archive-url=https://web.archive.org/web/20210424055035/https://news.nate.com/view/20150116n20602?mid=e0101|url-status=live}}

It was confirmed on September 2, 2015 that the trio sub-unit would return.{{Cite web |url=http://english.yonhapnews.co.kr/culturesports/2016/02/16/0701000000AEN20160216009000315.html |title=Yonhap News Agency |access-date=May 26, 2018 |archive-date=June 29, 2016 |archive-url=https://web.archive.org/web/20160629045526/http://english.yonhapnews.co.kr/culturesports/2016/02/16/0701000000AEN20160216009000315.html |url-status=live }}

On January 20, 2016, CI Entertainment confirmed that SS501's special project group would debut as Double S 301. The group held its comeback showcase at Art Hall of Lotte Card Art Center on February 15 at 8pm KST, and released their official debut mini-album ETERNAL 5 on the following day.{{Cite web |url=http://m.mwave.interest.me/mobileweb/enewsworld/en/article/102467/double-s-301-to-hold-concert-in-seoul |title=Double S 301 to hold concert in seoul |access-date=February 5, 2016 |archive-date=February 5, 2016 |archive-url=https://web.archive.org/web/20160205122357/http://m.mwave.interest.me/mobileweb/enewsworld/en/article/102467/double-s-301-to-hold-concert-in-seoul |url-status=live }}

In February 2017, Hyung-jun began his mandatory military enlistment and is expected to return in 2019.{{Cite web|title=SS301's Kim Hyung-jun to enter police force|url=https://n.news.naver.com/mnews/article/044/0000182150?sid=004|url-status=live|access-date=2021-04-24|website=Naver|language=ko|archive-date=April 24, 2021|archive-url=https://web.archive.org/web/20210424055034/https://n.news.naver.com/mnews/article/044/0000182150?sid=004}}{{Cite web|title=Kim Hyung-jun accepted to Gyeonggi police|url=https://koreajoongangdaily.joins.com/2016/12/29/etc/Kim-Hyungjun-accepted-to-Gyeonggi-police/3028033.html|access-date=2021-04-24|website=koreajoongangdaily.joins.com|date=December 29, 2016 |language=en|archive-date=April 24, 2021|archive-url=https://web.archive.org/web/20210424055112/https://koreajoongangdaily.joins.com/2016/12/29/etc/Kim-Hyungjun-accepted-to-Gyeonggi-police/3028033.html|url-status=live}} Kim Hyun Joong returned from his enlistment shortly after.{{Cite news|url=http://english.chosun.com/site/data/html_dir/2017/02/13/2017021301538.html|title=Fans Elated as Kim Hyun-joong Ends Military Service|date=2017-02-13|work=The Chosun Ilbo|access-date=2018-04-17|language=en|archive-date=May 10, 2018|archive-url=https://web.archive.org/web/20180510094450/http://english.chosun.com/site/data/html_dir/2017/02/13/2017021301538.html|url-status=live}} On July 1, Jungmin completed his service.{{Cite web|last=Herald|first=The Korea|date=2017-01-09|title=K-pop stars return from military service, top actors enlist|url=http://www.koreaherald.com/view.php?ud=20170109000800|access-date=2021-04-24|website=www.koreaherald.com|language=en|archive-date=May 27, 2018|archive-url=https://web.archive.org/web/20180527201607/http://www.koreaherald.com/view.php?ud=20170109000800|url-status=live}}

On December 29, 2017, Youngsaeng announced that the group had reunited in Japan (minus Hyung jun, who was still serving military,) to discuss plans for a reunion album in 2018. Jungmin also announced that all 4 members had so far agreed, and planned to release it following Hyung jun's return.{{Cite web|title=[단독]SS501 재결합 논의…멤버들 日서 회동|url=https://entertain.naver.com/now/read?oid=018&aid=0004002001|url-status=live|access-date=2021-04-24|website=Naver|language=ko|archive-date=April 24, 2021|archive-url=https://web.archive.org/web/20210424055035/https://entertain.naver.com/now/read?oid=018&aid=0004002001}}{{Cite web|title=[엑's 인터뷰①] 허영생 "SS501, 데뷔 15주년에 완전체로 뭉치고 싶다"|url=https://entertain.naver.com/now/read?oid=311&aid=0000800409|url-status=live|access-date=2021-04-24|website=Naver|language=ko|archive-date=December 4, 2017|archive-url=https://web.archive.org/web/20171204105735/http://entertain.naver.com/now/read?oid=311&aid=0000800409}}

On December 29, 2018, Hyungjun was discharged from the military, and announced he would join the group's discussions regarding a comeback.{{Cite web|title=[엑's 현장] "2막 시작 잘해보겠다" SS501 김형준, 성실하게 의경 생활 마치고 무사 전역|url=https://entertain.naver.com/read?oid=311&aid=0000937898|url-status=live|access-date=2021-04-24|website=Naver|language=ko|archive-date=January 4, 2019|archive-url=https://web.archive.org/web/20190104231055/https://entertain.naver.com/read?oid=311&aid=0000937898}}

On October 2, 2020, Youngsaeng and Kyujong held a performance under the SS501 name in celebration of Chuseok alongside U-Kiss, Narsha, Teen Top, and T-ara.{{cite web|url=https://entertain.naver.com/now/read?oid=109&aid=0004283299|title='문명특급' 티아라→SS501, 숨듣명 콘서트 "더이상 숨어서 듣지 말아요" [종합]|website=Osen|date=October 3, 2020|access-date=October 3, 2020|archive-date=October 28, 2020|archive-url=https://web.archive.org/web/20201028205307/https://entertain.naver.com/now/read?oid=109&aid=0004283299|url-status=live}}

On October 17, 2024, it was confirmed the group would reunite to release a Japanese album for their 20th anniversary.{{cite web|url=https://star.ytn.co.kr/_sn/0117_202410171128314124|title=단독 SS501, 데뷔 20주년에 재결합…5인 완전체 뭉친다|website=YTN|date=October 17, 2024}}

On May 1, 2025, Henecia announced that Kim Hyun Joong, Heo Young Saeng and Kim Kyu Jong will reunite as Five O One for the groups 20th anniversary and will start their world tour in July.{{Cite web |title=네이버 엔터 |url=https://m.entertain.naver.com/now/article/108/0003325022 |access-date=2025-05-05 |website=m.entertain.naver.com}}

Although most of their music is composed by various people, the members of SS501 have also contributed to their albums. Five of them wrote the lyrics for "Green Peas" from Rebirth Album dedicated especially to their fans.SS501. Rebirth. 2009. CD. Kim Hyung-jun and his brother, Kim Ki-bum, formerly of U-KISS, composed, under the name "H&B", the songs: "Want It", "The One", "I AM" from U R Man AlbumSS501.U R Man. 2008. CD. and "Hey G" from Solo Collection Album.SS501. Solo Collection. 2009. CD. Kim Hyung-jun also wrote the lyrics of the song "Obsess" in their Rebirth album. Heo Young-saeng composed his solo song "Is It Love?" from Solo Collection Album and wrote the lyrics of "Until Forever", one of the tracks in SS501's album Destination. Park Jung-min composed the song "Kiss" which is sung by Rainbow from Gossip Girl Album,Rainbow. Gossip Girl. 2009. CD. where he performed the song at their Persona concert.[http://babyvfan.wordpress.com/2010/03/01/ss501-jung-min-peform-rainbow%E2%80%99s-song-%E2%80%9Ckiss%E2%80%9D-persona-in-seoul-encore/ "SS501-Jung Min perform Rainbow’s song “KISS” @ Persona in Seoul Encore"] {{Webarchive|url=https://web.archive.org/web/20140814155615/http://babyvfan.wordpress.com/2010/03/01/ss501-jung-min-peform-rainbow%E2%80%99s-song-%E2%80%9Ckiss%E2%80%9D-persona-in-seoul-encore/ |date=August 14, 2014 }} Retrieved. 2013-02-16 He also wrote the lyrics of Not Alone and contributed to all the other songs from his album.Park Jung Min. Not Alone. 2011. CD. He wrote lyrics in Japanese and sang the song "Your Colour" himself for his new mobile drama for LISMO Channel in Japan entitled Love Song In August.[http://liezle.blogspot.ca/2011/07/audio-ost-from-love-song-in-august-by.html "[Audio] OST from 'Love Song in August' by Park Jung Min"] {{Webarchive|url=https://web.archive.org/web/20140810080053/http://liezle.blogspot.ca/2011/07/audio-ost-from-love-song-in-august-by.html |date=August 10, 2014 }} Retrieved. 2013-02-16

{{main article|SS501 discography}}

• S.T 01 Now (2006)
• SS501 (2007)
• All My Love (2009)

• 2006–2007: SS501's Youngstreet –-- Kim Kyu-jong, Park Jung-min and Heo Young-saeng
• 2009–present: Music High –-- Kim Hyung-jun

• 2008: PHOTO501 --- photo book
• 2009: Endless Melody --- photo book

{{col-begin}}

{{col-2}}

• Step Up in Seoul, South Korea (2006)
• Step Up in Busan, South Korea (2006)
• Step Up in Daegu, South Korea (2006)
• Concert in Osaka, Japan (2006)
• Concert in Seoul, South Korea (2006)
• 4th Annual Korean Music Festival in Los Angeles, California, USA (2006)
• Concert in Tokyo, Japan (2007)
• Concert in Shanghai, China (2008)
• Concert in Tokyo, Japan (2008)
• Concert in Osaka, Japan (2008)
• SS501 Showcase with Triple S – Olympic Fencing Gymnasium, Seoul (15 November 2008)

{{col-2}}

• Victory Concert in Los Angeles, California, USA (2009)
• 7th Annual Korean Music Festival in Los Angeles, California, USA (2009)
• 1st Asia Tour Persona in Seoul, South Korea – two concerts (July 2009)
• 1st Asia Tour Persona in Tokyo, Japan (2009)
• 1st Asia Tour Persona in Taipei, Taiwan (2009),{{cite web|url=http://www.asiae.co.kr/news/view.htm?sec=ent9&idxno=2009101915523736475|title=SS501 Taiwan concert attracts 12,000 fans|last=Lee Hye|first=Rin|date=19 October 2009|work=Asiae|access-date=31 October 2009|archive-date=March 19, 2012|archive-url=https://web.archive.org/web/20120319044844/http://www.asiae.co.kr/news/view.htm?sec=ent9&idxno=2009101915523736475|url-status=live}}
• 1st Asia Tour Persona in Shanghai, China (2009)
• 1st Asia Tour Persona in Hong Kong, China (2009)
• 1st Asia Tour Persona in Bangkok, Thailand (2010)
• 1st Asia Tour Persona Encore in Seoul, South Korea (27 February 2010 at Olympic Gymnastics Arena)[https://www.koreatimes.co.kr/www/news/art/2011/07/151_61016.html "Classical Concerts, Big Tickets, Pop and Jazz, Plays and Musicals"] Korea Times. 18 February 2010. Retrieved 2011-10-31
• SS501 Special Concert in Saitama Super Arena (25 April 2010)
• SS501 Newton X-Concert in Seoul, South Korea (13 June 2010)

{{col-end}}

{{for multi|individual awards|Kim Hyun-joong#Awards|and|Heo Young-saeng#Awards|and|Kim Kyu-jong|and|Park Jung-min (singer)#Awards|and|Kim Hyung-jun#Awards}}

{{reflist|2}}

{{commons category|SS501}}

• [https://web.archive.org/web/20060518205215/http://ss501.dspenter.com/ SS501 DSP Media official homepage] {{in lang|ko}} ([https://web.archive.org/web/20091103221920/http://www.ss501.jp/ official Japanese homepage] {{in lang|ja}})

{{SS501}}

{{Daesung Entertainment}}

{{Golden Disk Awards for New Artist of the Year}}

{{MAMA Award for Best New Artist}}

{{Authority control}}

Category:Musical groups established in 2005

Category:South Korean dance music groups

Category:K-pop music groups

Category:Japanese-language singers of South Korea

Category:Pony Canyon artists

Category:Musical groups from Seoul

Category:DSP Media artists

Category:MAMA Award winners

Category:CI Entertainment artists