At 99: A Portrait of Louise Tandy Murch is a Canadian short documentary film, directed by Deepa Mehta and released in 1975. The film centres on Louise Tandy Murch, a 99-year-old retired music teacher who was still living independently in her own home. Louise Tandy Murch was the mother of painter Walter Tandy Murch, and the grandmother of Academy Award-winning film sound editor Walter Murch. The film was distributed primarily by broadcast on CBC Television in 1975, although it also had a theatrical screening at the inaugural 1976 Toronto International Film Festival.