Colin may refer to:

  • 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 (given name), people with the given name Colin
  • Colin (security robot), in Mostly Harmless of the The Hitchhiker's Guide to the Galaxy series by Douglas Adams
  • Tropical Storm Colin (2010), an Atlantic storm in 2010
  • Colin the Vet, a fictional character in the UK comic The Beano