Big Brother Canada is a Canadian television reality game show based on the Dutch reality show of the same name, which is part of the wider Big Brother franchise. The first season of the series premiered on February 27, 2013, on Slice. Starting with the third season, the show is aired on Global. The series is produced by Endemol and Insight Productions. It is hosted by Arisa Cox, who is concurrently an executive producer starting from the ninth season.The show follows the premise originated by the American version of the show, in which a group of contestants, known as "HouseGuests", live together in a specially constructed house that is isolated from the outside world as they compete for a $100,000 cash prize, as well as additional prizes from the show's sponsors. The HouseGuests are continuously monitored during their stay in the house by live television cameras as well as personal audio microphones.

A live feed into the house is available for viewers to watch for free through the show's website. Big Brother Canada is the first incarnation of the series to adopt the format used in the United States, which greatly differs from others. The rules of the series have also been altered throughout each season through "twists" added to the game.

The series was put on hiatus following the conclusion of the fifth season, but fan support saw the series renewed for a sixth season. The eleventh season premiered on March 8, 2023

Since it first premiered, Big Brother Canada has aired more than 300 episodes and has featured 147 HouseGuests.