Katsuyuki Sakai

{{Infobox rugby biography

| image = Japan Sevens 2018-24b.jpg

| image_size =

| caption =

| birth_name =

| birth_date = {{birth date and age|1988|9|7}}

| birth_place = Mie, Japan

| height = {{height|m=1.72}}

| weight = {{cvt|85|kg|lb stlb}}

| ru_position = Wing

| amatyears1 =

| amatteam1 =

| years1 = {{nowrap|2013–2022}}

| clubs1 = {{nowrap|Toyota Industries}}

| apps1 = 38

| points1 = 70

| ru_clubupdate = 22 February 2021

| repyears1 = 2007–2008

| repteam1 = Japan U20

| repcaps1 = 5

| reppoints1 = 0

| ru_sevensnationalyears1 = 2011–2018

| ru_sevensnationalteam1 = Japan Sevens

| ru_sevensnationalcomp1 = 42

}}

{{Nihongo|Katsuyuki Sakai|坂井 克行|Sakai Katsuyuki|born September 7, 1988}} is a Japanese rugby union player. He plays for the Japanese club Toyota Industries Shuttles in the Top League. He also plays rugby sevens for Japan's national rugby sevens team and was named in their 2016 Summer Olympics squad.{{Cite web|url=https://www.rio2016.com/en/athlete/katsuyuki-sakai |title=SAKAI Katsuyuki |website=Rio 2016 |access-date=2016-08-07 |url-status=dead |archiveurl=https://web.archive.org/web/20160806080720/https://www.rio2016.com/en/athlete/katsuyuki-sakai |archivedate=2016-08-06 }}{{Cite web|url=http://www.planetrugby.com/news/japan-announce-olympic-sevens-squads/|title=Japan announce Olympic Sevens squads|last=|first=|date=2016-07-18|website=Planetrugby.com|publisher=|language=en-US|access-date=2016-08-07}}

He captained the Japanese squad when they played at the 2014 Hong Kong Sevens and won the World Series Qualifier for the 2014–15 Sevens World Series.{{Cite web|url=http://www.meniscuszine.com/articles/2014033128571/rugby-japan-wins-sevens-world-series-qualifying-tournament/|title=Rugby: Japan wins Sevens World Series qualifying tournament|last=Chan|first=Yuan-Kwan|date=2014-03-31|website=Meniscus Magazine|publisher=|language=en-US|access-date=2016-08-07}} He was also a member of the squad that won the 2015 ARFU Men's Sevens Championships to qualify for the 2016 Summer Olympics.{{Cite web|url=https://theprovince.com/sports/rugby/japan-beats-hong-kong-24-10-in-asia-rugby-sevens-qualifying-tournament-to-seal-rio-2016-berth|title=Japan beats Hong Kong 24-10 in Asia Rugby sevens qualifying tournament to seal Rio 2016 berth|last=|first=|date=2015-11-10|website=theprovince.com|publisher=|language=en-US|access-date=2016-08-07}}