Richard Frank Keith Harris (born 5 March 1968) is a London-based composer, arranger, transcriber, teacher and pianist.
At Edinburgh he co-founded the contemporary classical ensemble Piano Circus, with whom he was a member until 2002, commissioning and performing works by Arvo Pärt, Brian Eno, Philip Glass and Steve Reich.
Harris's books range from his own compositions and educational tutors to film, jazz and pop arrangements, and include collaborations with Evelyn Glennie and Joanna MacGregor.
In 2005, Harris created a website allowing users to request personalised sheet music, in the form of bespoke arrangements and transcriptions.
Harris also gives lectures with author Rob Eastaway entitled Numbers and Rumbas, exploring the relationship between mathematics and music.