Guru is a 2007 Indian Hindi-language drama film directed and co-written by Mani Ratnam. It stars Abhishek Bachchan, Aishwarya Rai, Mithun Chakraborty, R. Madhavan, and Vidya Balan. The score and soundtrack for the film were composed by A. R. Rahman.

The film was rumored to be a biopic of the industrial tycoon Dhirubhai Ambani, but Ratnam refuted the claims, clarifying it was a work of fiction. The film was released on 12 January 2007 with its première at the Elgin Theatre in Toronto, Canada, on Thursday, 11 January 2007 by Roger Nair, making it the first Indian film to have a mainstream international première in Canada. Roger Nair Productions acquired the rights for Canada and held a premiere with most of the cast and crew flown to Toronto, Canada. The film was premiered in the Tous Les Cinemas du Monde (World Cinema) section of 2007 Cannes Film Festival. The film had also been dubbed and released in Tamil with the same title while in Telugu with the title Gurukanth.