Warrendale is a 1967 documentary film by Canadian filmmaker Allan King.

The film is a cinéma vérité look at the lives of emotionally disturbed children housed in a facility named Warrendale, in Rexdale, Ontario, at the time a Toronto suburb.

However, almost a year after it opened, it became the centre of several controversies in the Legislative Assembly of Ontario, and was eventually closed.

Warrendale won awards at the 1967 Cannes Film Festival, and French director Jean Renoir declared King a great artist.

[3] In 2002, Warrendale was honoured by the Masterworks program of the Audio-Visual Preservation Trust of Canada.