English organist Simon Preston (born 1938), English organist, also conductor, and composer.

Originally a chorister at King's College, Cambridge, he studied the organ with C. H. Trevor before returning to King's as organ scholar. He was sub-organist of Westminster Abbey from 1962-67, and organist of Christ Church, Oxford from 1970 before returning to Westminster as Organist and Master of the Choristers in 1981. He relinquished his Westminster post in 1987, and has since led an international concert career, and has also composed works for the organ, the best-known of which is probably his "Alleluyas", written in the style of Olivier Messiaen.

His playing, always very clean and precise, has mellowed from the fiery and incisive style of his younger days, to the more sedate and comfortable now, though always with mastery of the instrument and the work in question.