Melvyn Desmond Collins (born 5 September 1947, Isle of Man) is a British saxophonist, flautist and session musician.

Collins has played in several progressive rock groups, having been a member of King Crimson on two occasions (the first from 1970 to 1972 and the second from 2013 to 2021) and having played with Camel, the Alan Parsons Project, Roger Waters and Chris Squire. He has also worked in a wide variety of contexts ranging from R&B and blues rock to jazz.