A terrapin is a turtle living in fresh or brackish water.

Terrapin may also refer to:

  • Terrapin (amphibious vehicle), a World War II transport vehicle used by the Allies
  • "Terrapin" (song), a 1970 song by Syd Barrett
  • "The Terrapin", a short story by Patricia Highsmith
  • Terrapin attack, a cryptographic attack on the Secure Shell Protocol
  • Terrapin Beer Company, a brewery in Athens, Georgia, US
  • "Terrapin Part 1", a 1977 song by Grateful Dead
  • HMS Terrapin (P323), a World War II British submarine
  • Maryland Terrapins, the athletic teams of the University of Maryland
  • Baltimore Terrapins, a baseball team in the short-lived Federal League from 1914–15
  • Terrapin Park, the original name of the fifth Oriole Park
  • Portable classroom or terrapin, a temporary school building
  • "Terrapin", a 2024 song by Clairo

See also

  • Terrapin Station, a 1977 album by Grateful Dead
  • Terrapene, the Latin name for the box turtle genus (which does not include terrapins)