2025 Ontario Tankard
The 2025 Men's Ontario Curling Championship, better known as the Ontario Tankard was held from January 19 to 26 at Cobourg Community Centre in Cobourg, Ontario. It serves as the provincial men's curling championship for Southern Ontario. The winning Sam Mooibroek rink will represent Ontario at the 2025 Montana's Brier, Canada's national men's curling championship in Kelowna, British Columbia. The event was held in conjunction with the 2025 Ontario Women's Curling Championship, the provincial women's championship. Both events are held together in non-Winter Olympic years.
Cobourg was chosen as the host community in June 2024. It last hosted the Tankard in 2017.
Qualification process
Twelve teams will qualify for the 2025 Ontario Tankard. The top eight southern Ontario teams on the Canada Team Ranking System as of December 16, 2024 qualified, as well as four teams from an open qualifier.| Qualification method | Berths | Qualifying team |
| CTRS standings | 8 | Sam Mooibroek Scott Howard Mark Kean Jayden King Alex Champ Jonathan Beuk Landan Rooney Kibo Mulima |
| Open Qualifier | 4 | Brent Ross Pat Ferris Brett Lyon-Hatcher Travis Fanset |