David O'List (born 13 December 1948) is an English rock guitarist, vocalist and trumpeter.

[2] O'List was picked by Andrew Loog Oldham as guitarist for The Nice with organist and pianist Keith Emerson, bassist and singer Lee Jackson and drummer Ian Hague (later replaced by Brian Davison), then a backing band for P. P. Arnold, and left The Attack in February 1967.

Their only hit single, a re-worked version of Leonard Bernstein's "America", reached number 21 in the UK in July of that year.

[4] O'List's style in The Nice was described by Bruce Eder of Allmusic as "Hendrix-ish guitar ... in sharp relief.

[8] In early 1970 O'List provided guitar and bass for The Misunderstood[9] and then Roxy Music between October 1971 and February 1972.