The 2025 Canadian Soccer League season was the 28th season under the Canadian Soccer League name. The season began with the Royal CSL Cup tournament on June 8, 2025, while the regular season officially started on June 22, 2025. The regular season concluded on September 13, 2025, with Scarborough SC winning its third divisional title.
The playoffs began on September 21, 2025, with the championship match played on September 28, 2025. In the championship final, Scarborough won their third title by defeating the Serbian White Eagles.
The season began with the third edition of the Royal CSL Cup tournament in honor of former league announcer Enio Perruzza. The Serbian White Eagles defended their title by defeating Scarborough SC in the finals. Their rivalry would continue throughout the regular season, with the Serbs leading the standings in the first three rounds. Their lead was challenged when Scarborough defeated the Serbs, which tied the standings of both teams. Scarborough would maintain the lead for the majority of the season due to a higher goal difference. Near the final stages of the regular season, the Serbs had an opportunity to retake the lead, but tied the match against Scarborough. The winners of the divisional title were decided on the final match of the season, where both teams won their games, with the title going to Scarborough due to a higher goal difference.
After two seasons without the playoffs, the league reinstated the format with all four teams qualifying. In the preliminary round, Scarborough defeated expansion side Aeem Canada, while the Serbs defeated Unity FC. In the championship final, Scarborough secured a league double by defeating the White Eagles.
Membership in the league decreased from six to four teams. Aeem Canada FC was the sole addition to the league, with Hamilton City, Spanish Future Stars, and the Toronto Falcons not returning. It was decided at the annual general meeting that several clubs were excluded from the competition due to unpaid league fees. All the league matches were scheduled in Toronto at Esther Shiner Stadium.
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The 2025 Royal CSL Cup was the third tournament in honour of former league announcer Enio Perruzza, who died in 2021.