Tristram Ogilvie Cary, OAM (14 May 1925 – 24 April 2008) was a pioneering English-Australian composer. He was also active as a teacher and music critic.
His concert works of note include a Sonata for guitar (1959), Continuum for tape (1969), a cantata Peccata Mundi (1972), Contours and Densities at First Hill for orchestra (1972), a Nonet (1979), String Quartet No. 2 (1985) and The Dancing Girls for orchestra (1991).
Cary is also particularly well known for his film and television music. He wrote music for the science fiction television series Doctor Who(including the first Dalek story), as well as the score for the Ealing comedy The Ladykillers (1955). Later film scores included Quatermass and the Pit (1967) and Blood from the Mummy's Tomb (1971), both for Hammer. He also composed the score for the ABC TV animated version of A Christmas Carol. and the children's Animated special Katya and the Nutcracker.