James Clarke (born in October 1957) is an English composer sometimes associated with the New Complexity school. According to fellow English composer and music scholar Christopher Fox, in The New Grove Dictionary of Music and Musicians, "After studying at Southampton University and City University, London, [Clarke] was awarded a Finnish Government Scholarship to study composition with Usko Meriläinen in Helsinki." In 1979, with his colleague Richard Emsley, Clarke co-founded the new music ensemble, Suoraan, "a small band of outstanding specialist performers" based in London "which dedicatedly promoted the music of, centrally, Iannis Xenakis but also younger British and European composers such as Michael Finnissy and James Dillon." Yet, as Christopher Fox points out, "for much of his career [Clarke's] work has attracted most attention beyond the British Isles, including significant performances at the International Gaudeamus Music Week and the ISCM World Music Days." Fox relates further:

From 1994 to 1997[,] he was Composer-in-Residence at Queen's University, Belfast, where, as artistic director of the Sonorities Festival of new music, his programmes were notable for their advocacy...