Nam Yoo-sun

{{Short description|South Korean swimmer (born 1985)}}

{{use dmy dates|date=May 2020}}

{{Infobox swimmer

| name = Nam Yoo-sun

| image =

| image_size =

| caption =

| fullname = Nam Yoo-sun

| national_team = {{KOR}}

| strokes = Individual medley

| club = Gyeongsangnamdo Sports Council

| coach = An Jong-taek

| collegeteam = Seoul National University

| birth_date = {{birth date and age|1985|7|23|df=yes}}

| birth_place = Seoul, South Korea

| death_date =

| death_place =

| height = 1.67 m

| weight = 46 kg

| medaltemplates =

{{MedalSport | Women's swimming}}

{{MedalCountry| South Korea}}

{{MedalCompetition|East Asian Games}}

{{MedalSilver| 2005 Macau | 400 m medley}}

{{MedalBronze| 2005 Macau | 200 m medley}}

| show-medals = yes

| updated =

}}

{{family name hatnote|Nam||lang=Korean}}

Nam Yoo-sun (also Nam Yu-seon, {{langx|ko|남 유선}}; born July 23, 1985) is a South Korean swimmer, who specialized in individual medley events.{{cite Sports-Reference |title=Nam Yu-Seon |url=https://www.sports-reference.com/olympics/athletes/na/nam-yu-seon-1.html |accessdate=18 January 2013 |quote=Original name: 남 유선 / Other name(s): Nam Yoo-Sun}}{{cite web|title=NAM Yoosun |url=http://results.beijing2008.cn/WRM/ENG/BIO/Athlete/7/241927.shtml |website=Beijing2008.cn |publisher=Beijing Organizing Committee for the Olympic Games |accessdate=5 October 2015 |url-status=dead |archiveurl=https://web.archive.org/web/20090603175508/http://results.beijing2008.cn/WRM/ENG/BIO/Athlete/7/241927.shtml |archivedate= 3 June 2009 }} She is a three-time Olympian (2000, 2004, and 2008), a fourth-place finalist at the 2002 Asian Games in Busan, and a two-time medalist in the individual medley (both 200 and 400 m) at the 2005 East Asian Games in Macau, China.{{cite news|title=Wu and Qi Win Third Gold Apiece, as China Winds Up a Dominant Performance at Asian Games |url=http://www.swimmingworldmagazine.com/lane9/news/4193.asp |publisher=Swimming World Magazine |date=5 October 2002 |accessdate=25 March 2013 |url-status=dead |archiveurl=https://web.archive.org/web/20131228210352/http://www.swimmingworldmagazine.com/lane9/news/4193.asp |archivedate=28 December 2013 }} Nam became the first South Korean swimmer in history to reach an Olympic final, until Park Tae-Hwan won the nation's first ever swimming medal at the succeeding Olympics in 2008.

Nam made her first South Korean team, as a 15-year-old, at the 2000 Summer Olympics in Sydney, where she competed in the women's 200 m individual medley. Swimming in heat two, she raced to fourth place and twenty-seventh overall by nearly five seconds behind winner Hana Černá of the Czech Republic in 2:22.53.{{cite web|title=Sydney 2000: Swimming – Women's 200m Individual Medley Heat 2 |url=http://www.la84foundation.org/6oic/OfficialReports/2000/Masters/sw/SWresults.pdf |archive-url=https://web.archive.org/web/20110819181023/http://la84foundation.org/6oic/OfficialReports/2000/Masters/sw/SWresults.pdf |url-status=dead |archive-date=19 August 2011 |work=Sydney 2000 |publisher=LA84 Foundation |page=323 |accessdate=3 March 2013 }}

At the 2004 Summer Olympics in Athens, Nam placed seventh in the 400 m individual medley with a time of 4:50.35, edging out Greece's Vasiliki Angelopoulou by exactly half a second (0.50).{{cite news|last=Thomas|first=Stephen|title=Klochkova Wins Her Second Consecutive Olympic 400IM. Sandeno Takes the Silver, Sets a New American Record. Argentina's Bardach Grabs Bronze in S.A. Record|url=http://www.swimmingworldmagazine.com/lane9/news/7800.asp|publisher=Swimming World Magazine|date=14 August 2004|accessdate=18 January 2013|url-status=dead|archiveurl=https://web.archive.org/web/20051203024143/http://www.swimmingworldmagazine.com/lane9/news/7800.asp|archivedate=3 December 2005}}{{cite web|title=Women's 400m Individual Medley Final|url=http://news.bbc.co.uk/sport1/hi/olympics_2004/swimming/results/3531314.stm|work=Athens 2004|publisher=BBC Sport|date=14 August 2004|accessdate=31 January 2013}}

Eight years after her Olympic debut, Nam qualified for her third South Korean team, as a 23-year-old, at the 2008 Summer Olympics in Beijing. She eclipsed a FINA B-standard entry time of 4:52.38 from the Dong-A Swimming Championships in Ulsan.{{cite web|title=Olympic Cut Sheet – Women's 400m Individual Medley|url=http://magazines.swimmingworld.com:9997/SPIPDF/080508olyscutsheet.pdf|page=84|publisher=Swimming World Magazine|accessdate=10 April 2013}} In the 400 m individual medley, she topped the first heat by five seconds ahead of Singapore's Quah Ting Wen with a time of 4:46.74. Nam failed to reach the top 8 final, as she placed twenty-eighth overall in the prelims.{{cite web|title=Women's 400m Individual Medley Heat 1 |url=http://www.2008.nbcolympics.com/swimming/resultsandschedules/rsc=SWW054900/index.html |work=Beijing 2008 |publisher=NBC Olympics |accessdate=18 January 2013 |url-status=dead |archiveurl=https://web.archive.org/web/20120821062434/http://www.2008.nbcolympics.com/swimming/resultsandschedules/rsc%3DSWW054900/index.html |archivedate=21 August 2012 }}