Peter Grimes, Op. 33, is an opera in three acts by Benjamin Britten, with a libretto by Montagu Slater based on the section "Peter Grimes", in George Crabbe's long narrative poem The Borough. The "borough" of the opera is a fictional small town that bears some resemblance to Crabbe's – and later Britten's – home of Aldeburgh, Suffolk, on England's east coast.

Edward Benjamin Britten, Baron Britten was an English composer, conductor, and pianist. He was a central figure of 20th-century British music, with a range of works including opera, other vocal music, orchestral and chamber pieces. His best-known works include the opera Peter Grimes (1945), the War Requiem (1962) and the orchestral showpiece The Young Person's Guide to the Orchestra (1945).