Sir Richard Rodney Bennett CBE (29 March 1936 – 24 December 2012) was an English composer and pianist. He was noted for his musical versatility, drawing from such sources as jazz, romanticism, and avant-garde; and for his use of twelve-tone technique and serialism. His body of work included over 200 concert works and 50 scores for film and television. He was also active in jazz, as a composer, a pianist, and an occasional vocalist.

For his scoring work, Bennett was nominated for a total of 10 BAFTA Awards, winning once for Best Original Music for the film Murder on the Orient Express (1974). He was also nominated for three Academy Awards (Far from the Madding Crowd, 1967; Nicholas and Alexandra, 1971; and Murder on the Orient Express) and three Grammy Awards, among other accolades. He was the International Chair of Composition of the Royal Academy of Music, and was knighted in 1998.

Bennett was born at Broadstairs, Kent, but was raised in Devon during World War II. His mother, Joan Esther, née Spink (1901–1983) was a pianist who had trained with Gustav Holst. His father, Rodney Bennett (1890–1948), was a children's book author, poet and lyricist, who worked with Roger Quilter on his theatre works and provided new words for some of the numbers in the Arnold Book of Old Songs.

Bennett was a pupil at Leighton Park School. He later studied at the Royal Academy of Music with Howard Ferguson and Lennox Berkeley. Ferguson regarded him as extraordinarily brilliant, having perhaps the greatest talent of any British composer in his generation, though lacking in a personal style. During this time, Bennett attended some of the Darmstadt summer courses in 1955, where he was exposed to serialism. He later spent two years in Paris as a student of the prominent serialist Pierre Boulez between 1957 and 1959. He always used both his first names after finding another Richard Bennett active in music.

Bennett taught at the Royal Academy of Music between 1963 and 1965, at the Peabody Institute in Baltimore, United States from 1970 to 1971, and was later International Chair of Composition at the Royal Academy of Music between 1994 and the year 2000. He was appointed a Commander of the Order of the British Empire (CBE) in 1977, and was knighted in 1998.

Bennett produced over 200 works for the concert hall, and 50 scores for film and television. He was also a writer and performer of jazz songs for 50 years. Immersed in the techniques of the European avant-garde via his contact with Boulez, Bennett subsequently developed his own dramato-abstract style. In his later years, he adopted an increasingly tonal idiom.

Bennett regularly performed as a jazz pianist, with such singers as Cleo Laine, Marion Montgomery (until her death in 2002), Mary Cleere Haran (until her death in 2011), and more recently with Claire Martin, performing the Great American Songbook. Bennett and Martin performed at such venues as The Oak Room at the Algonquin Hotel in New York, and The Pheasantry and Ronnie Scott's Jazz Club in London.

In later years, in addition to his musical activities, Bennett became known as an artist working in the medium of collage. He exhibited these collages several times in England, including at the Holt Festival, Norfolk in 2011, and at the Swaledale Festival, Yorkshire, in 2012. The first exhibition of his collages was in London in 2010, at the South Kensington and Chelsea Mental Health Centre, curated by the Nightingale Project, a charity that takes music and art into hospitals. Bennett was a patron of this charity. Bennett is honoured with four photographic portraits in the collection of the National Portrait Gallery, London.