Mark Ayres (Born 1961) is a television composer who is best known for providing incidental music on the original series of Doctor Who.

Ayres's work on broadcast Doctor Who was during Sylvester McCoy's era as the Seventh Doctor, comprising The Greatest Show in the Galaxy, Ghost Light, and The Curse of Fenric. Ayres was hired after he sent producer John Nathan-Turner a demonstration video containing music he had written to accompany Remembrance of the Daleks. Like most Doctor Who incidental music composers during the 1980s, Ayres created the music electronically, principally using digital synthesisers and samplers.