Benfey is a surname. Notable people with the surname include:
Christopher Benfey (born 1954), American literary critic Ida Benfey Judd (c. 1858–1952), American educator Otto Theodor Benfey (1925–2024), German-born American chemist and historian of science Theodor Benfey (1809–1881), German philologist and scholar of Sanskrit Theodore Benfey (1871–1935), American politician