John Stanton Shirley-Quirk CBE (28 August 1931 – 7 April 2014) was an English bass-baritone. A member of the English Opera Group during 1964–76, he gave premiere performances of several operatic and vocal works by Benjamin Britten, recording these and other works under the composer's direction. He also sang and recorded a wide range of works by other composers, ranging from Handel through Tchaikovsky to Henze.