CS Longueuil

The club was originally founded in 1970. In 2014, the club joined the Première Ligue de soccer du Québec, a Division III league, fielding a team in the men's division. They had a successful debut season, winning the league championship and advancing to the final of the League Cup, where they lost in the final to FC Gatineau. By winning the league title, they participated in the first Inter-Provincial Cup against the champion of League1 Ontario to determine the Canadian Division III champion, in 2014. In the Inter-Provincial Cup, in 2014, they faced League1 Ontario champions Toronto FC Academy, who defeated them over the two-legged fixture, losing the first leg at home 4-0 to TFCA and drawing the second leg away 0-0. By 2016, however, their budget was slashed in half, requiring them to field rosters with a greater number of young players.

In 2020, they had decided to add a team in the women's division of the Première Ligue de soccer du Québec. However, the 2020 season was postponed due to the COVID-19 pandemic. While some clubs opted out of the season upon the league restart, the club decided to remain part of the league and compete.