Ottawa South United

The club was founded as a youth soccer club in 2003 through a merger between Osgoode – Rideau Soccer Association (founded in 1972) and South Nepean United (founded in 1980). The club offers recreational and competitive in the Greater Ottawa Region. The Force Academy program draws players from across Eastern Ontario and Western Quebec.[2] OSU was recognized by Ontario Soccer with the Gold Award for Club Excellence, was a founding member of the Ontario Player Development League (OPDL) and one of the first 39 clubs in Canada to be granted a National Youth Club License.[3]

In 2012, they hired Paul Harris as club technical director, who came from English Premier League club Everton F.C.[4] In 2016, OSU partnered with American youth club Dallas Texans SC and Nike, which made it a part of the Dallas Texans' affiliation with Spanish La Liga club Atlético Madrid.[5] Soon after, Atlético, with OSU, hosted a soccer camp in the city, a precursor to the Spanish club ultimately forming Atlético Ottawa to play in the Canadian Premier League in 2020.[6] In 2016, they also partnered with Major League Soccer club Vancouver Whitecaps FC to launch a new Whitecaps FC Ottawa Academy Centre, in partnership with the Whitecaps FC Residency program where players could proceed in the next stage of their development.[7] In 2020, they partnered with Canadian Premier League club Atlético Ottawa becoming the first club to join Atlético's ‘Community Partnership Soccer Program.’ Through this, OSU will have access to coaching development, player development, Atlético player appearances, and open practices, while their male and female semi-pro teams will wear a “Powered by Atlético” crest on their sleeve.[8] As part of the partnership, the club announced that their PLSQ teams will be known as OSU Atlético.[1]

In 2017, the club joined League1 Ontario, a Division III league, fielding a team in the men's division,[9] using the club's nickname, OSU Force.[4] They defeated Aurora FC in their inaugural match on April 29, 2017 by a score of 3–1.[10] In 2019, they added a team in the women's division of League1 Ontario.[11]

For the 2020 season, the club moved both its male and female teams to the Première Ligue de soccer du Québec, a league on the same pyramid level as L1O, but located in the province of Quebec, in a move sanctioned by the Canadian Soccer Association.[12] While previously, the Ontario-based Ottawa Fury Academy had played in the Quebec-based league, this move represented the first time League1 Ontario and PLSQ have transferred a club between organizations.[13] The move to play in a different province was approved to ease travel for both OSU and the other League1 Ontario clubs, as Ottawa was located closer to the Quebec clubs than any of the other Ontario teams.[14] Due to restrictions put in place by the Government of Ontario as a result of the COVID-19 pandemic, OSU had to play home games in Quebec during the 2020 PLSQ season[15] and required an exemption from the Ontario Soccer Association to be eligible to participate making them the only Ontario-based club who was able to play competitive fixtures in 2020.[16] OSU was able to strengthen their roster for 2020 due to travel restrictions put in place as a result of the pandemic. Several players who were to play for teams in the United States instead joined Ottawa's team, resulting in only two players returning from the 2019 team that finished last in L1O.[17] Their first season in the PLSQ was interrupted by the pandemic and cancelled before its conclusion, with standings to be determined based on points per game earned in matches up to that date.[18] The male team ultimately finished in second place behind AS Blainville, following a 3–2 loss to Blainville in the final match of the season before the cancellation, in which Blainville scored the winning goal in the final minute of the match.[19]