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)