2023 Ontario Tankard
The 2023 Ontario Tankard,, the provincial men's curling championship for Southern Ontario, was held from January 24 to 29 at The Plex in Port Elgin, Ontario. The winning Mike McEwen rink represented Ontario at the 2023 Tim Hortons Brier on home soil in London, Ontario where they finished fourth place losing in the 3 vs. 4 Page Playoff game to Wild Card #1 6–3.
It was the second straight year that the event was held in Port Elgin. The 2022 event had been subject to COVID-19 restrictions, capping attendance at 500 people per draw, so the organizers requested that CurlON hold the event in Port Elgin again. The event was held in conjunction with the 2023 Ontario Scotties Tournament of Hearts, the provincial women's curling championship, which were held in Thornhill in 2022.
Qualification process
Twelve teams qualified for the 2023 Ontario Tankard. Two teams qualified via their results in the "Grand Slam" series events. Two teams qualified via their results in the Trillium Tour '1000' series events. Three teams qualified via their results in the Trillium Tour '500' series events. One team qualified via their results in the aforementioned Trillium Tour events, plus the CurlON 250 Event #1. The remaining four teams qualified via an open qualifier.| Qualification method | Berths | Qualifying team |
| Top Grand Slam series teams | 2 | John Epping Glenn Howard |
| Trillium Tour '1,000' Series | 2 | Pat Ferris Jason Camm |
| Trillium Tour '500' Series | 3 | Alex Champ John Willsey Mike Fournier |
| Trillium Tour '250' Series | 1 | Sam Mooibroek |
| Open Qualifier | 4 | Landan Rooney Dayna Deruelle Mike McEwen Travis Fanset |