Speciesbox | image = Diamond terrapin turtle reptile malaclemys terrapin.jpg | image_caption = Photographed in the wild | status = VU | status_system = IUCN3.1 | status_ref = | status2 = CITES_A2 | status2_system = CITES | status2_ref = | genus = Malaclemys | parent_authority = Gray, 1844 | species = terrapin | authority = (Schoepff, 1793) | synonyms = collapsible list| |Malaclemys terrapin terrapin |Testudo terrapin Schoepff, 1793 |Testudo concentrica Shaw, 1802 |Testudo ocellata Link, 1807 |Testudo concentrata Kuhl, 1820 (ex errore) |Emys concentrica Gray, 1831 (Duméril & Bibron, 1830) |Testudo concentrica var polita Gray, 1831 |Emys terrapin Holbrook, 1842 |Emys macrocephalus Gray,1844 |Malaclemys concentrica Gray, 1844 (1863) |Emys macrocephala LeConte,1854 |Emys terrapene LeConte,1856 (ex errore) |Clemmys terrapin Strauch, 1862 |Malaclemmys concentrica Gray, 1870 |Malacoclemmys terrapen Boulenger, 1889 (ex errore) |Malaclemys centrata concentrica Cochran, 1932 |Malaclemys terrapin Bangs, 1896 |Malaclemmys centrata concentrica Hay, 1904 |Malaclemys terrapin terrapin Lindholm, 1929 |Malaclemys terrapene Stephens & Wiens, 2003 |Malaclemys terrapin centrata |Testudo centrata Latreille, 1801 |Emys centrata Schweigger, 1812 |Emys concentrica var livida Gray, 1831 |Clemmys (Clemmys) centrata Fitzinger, 1835 |Malaclemmys centrata Lönnberg, 1894 |Malaclemmys terrapin centrata Mittleman, 1944 |Malaclemys terrapin centrata Mittleman, 1945 |Malaclemys terrapin centra Highfield, 1996 (ex errore) |Malaclemys terrapin littoralis |Malaclemmys littoralis Hay, 1904 |Malaclemys centrata littoralis Siebenrock, 1909 |Malaclemys pileata littoralis Stejneger & Barbour, 1917 |Malaclemys terrapin littoralis Lindholm, 1929 |Malaclemys terrapin macrospilota |Malaclemmys macrospilota Hay, 1904 |Malaclemys centrata macrospilota Siebenrock, 1909 |Malaclemys pileata macrospilota Stejneger & Barbour, 1917 |Malaclemys terrapin macrospilota Lindholm, 1929 |Malaclemys terrapin pileata |Emys pileata Wied, 1865 |Malaclemmys pileata Hay, 1904 |Malaclemys centrata pileata Siebenrock, 1909 |Malaclemys pileata pileata Stejneger & Barbour, 1917 |Malaclemys terrapin pileata Lindholm, 1929 |Malaclemys terrapin rhizophorarum |Malaclemys tuberculifera Gray, 1844 (nomen oblitum) |Malaclemmys littoralis rhizophorarum Fowler, 1906 (nomen protectum) |Malaclemmys terrapin rhizophorarum Carr, 1946 |Malaclemys terrapin rhizophorarum Carr, 1952 |Malaclemys terrapin rhizophararum Anderson, 1985 (ex errore) |Malaclemys terrapin tequesta |Malaclemys terrapin tequesta Schwartz, 1955 | synonyms_ref = The diamondback terrapin or simply terrapin (Malaclemys terrapin) is a species of turtle native to the brackish coastal tidal marshes of the East Coast of the United States and the Gulf of Mexico coast, as well as in Bermuda.