John White (born 5 April 1936 in Berlin) is an English experimental composer and musical performer. He invented the early British form of minimalism known as systems music, with his early Machines.
White was born in Berlin to an English father and German mother. The family moved to London at the outbreak of war. Originally a sculptor, White decided on a composition career when he heard Messiaen's Turangalîla-Symphonie. He studied composition at the London Royal College of Music from 1955–58 with Bernard Stevens and analysis privately with Elisabeth Lutyens. Upon graduation, White became the musical director of the Western Theatre Ballet, and then professor of composition at the Royal College of Music from 1961–67. He is a skilled pianist and tuba player and has written extensively for both instruments.
In the 1960s and 1970s he was closely associated with, and influenced by, English experimental composers such as Cornelius Cardew, Howard Skempton and Gavin Bryars. His Royal College of Music pupils have included Roger Smalley, Brian Dennis and William York. White's association with younger composers, including Christopher Hobbs, Dave Smith, Benedict Mason, and John Lely has led to many British ensembles, including the Promenade Theatre Orchestra, Hobbs-White Duo, Garden Furniture Music, the Farewell Symphony Orchestra and other groups.