Siobhan-Marie O'Connor

{{short description|English swimmer (born 1995)}}

{{EngvarB|date=October 2017}}

{{Use dmy dates|date=October 2017}}

{{Infobox swimmer

| name = Siobhan-Marie O'Connor

| image = Kazan 2015 - Victory Ceremony 200m individual medley W.JPG

| image_size =

| alt =

| caption = O'Connor (right) at the 2015 World Aquatics Championships medal ceremony for the 200 m medley

| fullname = Siobhan-Marie O'Connor

| nicknames = SOC

| national_team = {{GBR2}}

| strokes = Freestyle, butterfly, medley, breaststroke

| club = Bath National Centre{{cite web |title=Siobhan-Marie O'Connor |url=https://www.britishswimming.org/athlete-swimming-profiles/british-swimming-profiles/siobhan-marie-oconnor/ |publisher=British Swimming |access-date=11 July 2020 |archive-date=28 August 2016 |archive-url=https://web.archive.org/web/20160828235241/https://www.britishswimming.org/athlete-swimming-profiles/british-swimming-profiles/siobhan-marie-oconnor/ |url-status=dead}}

| coach = David McNulty

| birth_date = {{Birth date and age|df=yes|1995|11|29}}

| birth_place = Bath, England

| death_date =

| death_place =

| height = {{convert|5|ft|7|in|cm|sigfig=3|abbr=on}}{{cite web |title=Siobhan-Marie O'Connor |url=https://results.gc2018.com/en/swimming/athlete-profile-n6044607-siobhan-marie-o-connor.htm |work=Athletes' profiles |publisher=Gold Coast 2018 |access-date=11 April 2018 |archive-date=10 April 2018 |archive-url=https://web.archive.org/web/20180410201749/https://results.gc2018.com/en/swimming/athlete-profile-n6044607-siobhan-marie-o-connor.htm |url-status=live}}

| weight = 132 lb

| medaltemplates =

{{MedalSport | Women's swimming}}

{{MedalCountry |{{GBR2}}}}

{{MedalCount

|Olympic Games|0|1|0

|World Championships (LC)|1|0|1

|World Championships (SC)|0|3|0

|European Championships(LC)|2|1|1

|European Championships|0|3|2

|Commonwealth Games|2|4|3

|Total|5|12|7

}}

{{MedalOlympic}}

{{MedalSilver|2016 Rio de Janeiro|200 m medley}}

{{MedalCompetition | World Championships (LC)}}

{{MedalGold|2015 Kazan|4×100 m mixed medley}}

{{MedalBronze | 2015 Kazan | 200 m medley}}

{{MedalCompetition | World Championships (SC)}}

{{MedalSilver | 2014 Doha | 100 m medley}}

{{MedalSilver | 2014 Doha | 200 m medley}}

{{MedalSilver | 2014 Doha | 4×50 m mixed medley}}

{{MedalCompetition | European Championships (LC)}}

{{MedalGold|2016 London|4×100 m medley}}

{{MedalGold|2016 London|4×100 m mixed medley}}

{{MedalSilver|2016 London|200 m medley}}

{{MedalBronze|2018 Glasgow|4×100m medley}}

{{MedalCompetition | European Championships (SC)}}

{{MedalSilver | 2013 Herning | 200 m medley}}

{{MedalSilver| 2015 Netanya | 100 m medley}}

{{MedalSilver| 2015 Netanya | 200 m medley}}

{{MedalBronze|2019 Glasgow|200 m medley}}

{{MedalCountry | {{ENG}}}}

{{MedalCompetition | Commonwealth Games}}

{{MedalGold | 2014 Glasgow | 200 m medley}}

{{MedalGold | 2018 Gold Coast | 200 m medley}}

{{MedalSilver | 2014 Glasgow | 200 m freestyle}}

{{MedalSilver | 2014 Glasgow | 100 m butterfly}}

{{MedalSilver | 2014 Glasgow | 4×100 m freestyle}}

{{MedalSilver | 2014 Glasgow | 4×100 m medley}}

{{MedalBronze | 2014 Glasgow | 4×200 m freestyle}}

{{MedalBronze | 2018 Gold Coast | 4×100 m freestyle}}

{{MedalBronze | 2018 Gold Coast | 4×200 m freestyle}}

}}

Siobhan-Marie O'Connor (born 29 November 1995) is a former English competitive swimmer who has represented Great Britain at the Olympic Games, the FINA World Aquatics Championships and the LEN European Aquatics Championships, and England at the Commonwealth Games. A specialist in the 200 metres individual medley, she is the 2014 and 2018 Commonwealth Games champion in the event, and has won silver medals in the same event at the 2016 Summer Olympics, the 2015 World Aquatics Championships, 2016 European Aquatics Championships, the 2014 World Short-Course Championships and the 2013 and 2015 European Short Course Championships – on each occasion behind World and Olympic champion Katinka Hosszú. With six Commonwealth Games medals in total from 2014, O'Connor was England's most decorated athlete at those Games.

In addition, O'Connor swam the butterfly leg for Great Britain in the non-Olympic 4 x 100-metre mixed medley relay that won gold at the 2015 FINA World Aquatics Championships in a world record time for the event. she has also won gold medals in 2016 at the European Championships in the same event, and in the women's 4 x 100 metres medley relay.

O'Connor first competed for Great Britain at the 2012 Summer Olympics in the 100m breaststroke event.{{cite web |title=Siobhan-Marie O'Connor |url=http://www.teamgb.com/athletes/siobhan-marie-oconnor |publisher=teamgb.com |access-date=29 July 2012 |archive-date=29 July 2012 |archive-url=https://web.archive.org/web/20120729064828/http://www.teamgb.com/athletes/siobhan-marie-oconnor |url-status=dead}} She holds the British records for 200 metres individual medley, the 100 breaststroke and the 4 x 100-metre mixed medley relay.

O'Connor announced her retirement from competitive swimming on 16 June 2021, following a long battle with ulcerative colitis.[https://www.bbc.co.uk/sport/swimming/57492659 Siobhan-Marie O'Connor retires aged 25 because of 'debilitating' struggles] {{Webarchive|url=https://web.archive.org/web/20210616083657/https://www.bbc.co.uk/sport/swimming/57492659 |date=16 June 2021 }}, from BBC Sport.

O'Connor became a swimming coach and trained Daisy Ridley for her role in the 2024 movie Young Woman and the Sea.{{Cite web |last=Molski • |first=Max |date=2024-06-11 |title=Daisy Ridley dives into how an Olympic medalist helped her train for 'Young Woman and the Sea' |url=https://www.nbclosangeles.com/paris-2024-summer-olympics/daisy-ridley-olympic-medalist-training-young-woman-and-the-sea/3433586/ |access-date=2024-06-25 |website=NBC Los Angeles |language=en-US}}