The 2012 Dominion Tankard, Southern Ontario men's provincial curling championship, was held from February 6 to 12, hosted by the Stratford Country Club at the Stratford Rotary Complex in Stratford, Ontario.

The winning team of Glenn Howard, represented Ontario at the 2012 Tim Hortons Brier in Saskatoon, Saskatchewan.

Two additional teams qualify out of the challenge round.

The Northern Ontario provincial championship will occur December 8-11 at the Copper Cliff Curling Club in Copper Cliff, Ontario.

Four teams qualify out of the Northern Ontario championship.