The Stu Sells Oakville Tankard (also known as the OCT Championships) is an annual bonspiel on the men's and women's Ontario Curling Tour.

A Tier 2 men's event was added in 2016 (but was discontinued), with a total purse of $16,000.

In 2020, the event was held at the KW Granite Club in Waterloo, Ontario, due to the COVID-19 pandemic delaying the opening of the Oakville Curling Club.

That year, the men's event was halted before the playoffs, as one player was notified through a COVID Alert tracing app that he had come in contact with someone who had the virus.

[2] The event was postponed and eventually cancelled in 2022 to avoid conflicting with the 2022 PointsBet Invitational.