Sian Rainsley

{{Short description|British triathlete (born 1997)}}

{{Use dmy dates|date=December 2023}}

{{Infobox sportsperson

| name = Sian Rainsley

| caption =

| nickname =

| nationality =

| birth_date = {{Birth date and age|df=yes|1997|4|19}}

| birth_place =

| height =

| country = {{flagcountry|Great Britain}}

| sport = Triathlon

| hometown = Coventry

| death date =

| place of death =

| medaltemplates =

{{MedalSport|Women's triathlon}}

{{MedalCountry|{{GBR2}}}}

{{Medal|Competition|European Games}}

{{Medal|Silver|2023 Kraków-Małopolska|Mixed relay}}

}}

Sian Rainsley (born 19 April 1997) is a British triathlete.

She competed at the 2014 Youth Olympic Games winning a silver medal, 2021 European Triathlon Championships winning a bronze medal,{{Cite web |title=Sian Rainsley » Super League Triathlon |url=https://superleaguetriathlon.com/athlete/sian-rainsley/ |access-date=29 July 2022 |website=Super League Triathlon |language=en-GB}}{{Cite web |title=Sian Rainsley |url=https://www.britishtriathlon.org/gb-teams/elite-team/athletes/sian-rainsley_4343 |access-date=29 July 2022 |website=www.britishtriathlon.org |language=en |archive-date=29 July 2022 |archive-url=https://web.archive.org/web/20220729131338/https://www.britishtriathlon.org/gb-teams/elite-team/athletes/sian-rainsley_4343 |url-status=dead }} 2022 World Triathlon Championship Series Leeds finishing 15th,{{Cite web |date=21 June 2022 |title=Triathlete Sian Rainsley hopes she has done enough to secure "insane" place at Commonwealth Games |url=https://www.eurosport.com/triathlon/triathlete-sian-rainsley-hopes-she-has-done-enough-to-secure-insane-place-at-commonwealth-games_sto9001061/story.shtml |access-date=29 July 2022 |website=Eurosport |language=en}}{{Cite web |last=Rainsley |first=Sian |date=15 June 2022 |title='A pinch me moment': Sian Rainsley on her day at WTCS Leeds |url=https://www.tri247.com/triathlon-news/elite/sian-rainsley-wtcs-leeds-2022-reaction |access-date=29 July 2022 |website=TRI247 |language=en-GB}} and 2022 World Triathlon Championship Series Hamburg, finishing first.{{Cite web |last=Triathlon |first=World |title=Sian Rainsley (GBR) |url=https://www.triathlon.org/athletes/profile/sian_rainsley |access-date=29 July 2022 |website=World Triathlon |language=en}}

In the 2024 World Triathlon Cup, where Rainsley was awarded a gold medal, the national anthem of Spain was played instead of the British.{{Citation |title=List of wrong anthem incidents |date=2025-03-22 |work=Wikipedia |url=https://en.m.wikipedia.org/wiki/List_of_wrong_anthem_incidents |access-date=2025-03-24 |language=en}}

She was named to the 2022 Commonwealth Games, team England.{{Cite web |title=Sian Rainsley, Triathlon |url=https://teamengland.org/team-england-athletes/sian-rainsley |website=teamengland.org}} She came 12th in the women's event.{{cite news |title=Triathlon - Women's Individual Triathlon Results |work=BBC Sport |date=29 July 2022 |url=https://www.bbc.co.uk/sport/commonwealth-games/62345649 |access-date=30 July 2022}}

She was diagnosed with Crohn's Disease.{{Cite web |date=1 September 2021 |title=Sian Rainsley: Training and racing with Crohn's Disease |url=https://lessonsinbadassery.com/sian-rainsley-training-and-racing-with-crohns-disease/ |access-date=29 July 2022 |website=Lessons In Badassery |language=en-US}}