The 2015 Ontario Scotties Tournament of Hearts, the provincial women's curling championship for Southern Ontario, was held January 19 to 25 at the in Penetanguishene, Ontario. The winning Julie Hastings team represented Ontario at the 2015 Scotties Tournament of Hearts in Moose Jaw, Saskatchewan. The event marked the first tournament to exclude teams from Northern Ontario, which began to have its own entry into the Scotties, the 2015 Northern Ontario Scotties Tournament of Hearts.