Colin

Colin may refer to:
 * Colin (given name)
 * Colin (surname)
 * Colin (film), a 2008 Cannes film festival zombie movie
 * Colin (horse) (1905–1932), thoroughbred racehorse
 * Colin (humpback whale), a humpback whale calf abandoned north of Sydney, Australia, in August 2008
 * Colin (river), a river in France
 * Colin (security robot), in Mostly Harmless of The Hitchhiker's Guide to the Galaxy series by Douglas Adams
 * Tropical Storm Colin (disambiguation)
 * Collin, a District Electoral Area in Belfast, Northern Ireland which is sometimes spelt "Colin"