The 2019 Ontario Scotties Tournament of Hearts, the provincial women's curling championship for Southern Ontario, was held January 28 to February 2 at the Woolwich Memorial Centre in Elmira, Ontario. The winning team of skip Rachel Homan, third Emma Miskew, second Joanne Courtney and lead Lisa Weagle represented Ontario at the 2019 Scotties Tournament of Hearts in Sydney, Nova Scotia, finishing second. Homan defeated Julie Tippin in the final with a final score of 7-5. The event was held in conjunction with the 2019 Ontario Tankard, the men's provincial championship. This was the sixth time the team played at the Scotties and the fourth time representing Ontario.