Jonathan Harvey (born 3 May 1939 in Sutton Coldfield) is a British composer.

He studied with Erwin Stein and Hans Keller at St John's College, Cambridge, eventually obtaining a PhD. Early musical influences included Schoenberg, Berg, Messiaen and Britten. While undertaking postgraduate study at Glasgow University, Harvey was a 'cellist in the BBC Scottish Symphony Orchestra. Around this time, he became interested in the music of Karlheinz Stockhausen. In 1969 he took up a Harkness Fellowship at Princeton University, where he encountered Milton Babbitt, another strong influence on his music. In the 1980s Harvey produced much music at IRCAM after receiving an invitation from Pierre Boulez to work there.

Harvey is a Visiting Professor of Music at Imperial College London, and an Honorary Professor at Sussex University.

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