Erastus Clark Bridgman (October 31, 1817 - August 25, 1870) was a New York City based map publisher active in the middle of the 19th century. Bridgman was born in Westhampton, Massachusetts. He was in South Carolina in 1849, where his first child was born, but moved to New York City by 1850. Bridgman was in partnership with Edward H. Ensign (1818 - 1871) and Horace Thayer from 1850 - 1852, publishing under the imprint of 'Ensign, Thayer, and Co.' Later, from 1854 - 1863, the partnership changed to Edward H. Ensign, Thomas C. Fanning (1805 - 1873), and Bridgman, publishing as 'Ensign, Bridgman and Fanning.' After his death, the Bridgman firm was taken over by his son Edward Clark Bridgman (1849 - 19??).