Farey is a surname. Notable people with the surname include:
Cyril Farey (1888–1954), British architect and architectural illustrator John Farey Sr. (1766–1826), English geologist John Farey Jr. (1791–1851), English mechanical engineer, son of John Farey Sr. Joseph Farey (1796–1829), English mechanical engineer and draughtsman, son of John Farey Sr. Lizzie Farey (born 1962), Scottish artist
See also Farey sequence, a mathematical construct named after John Farey Sr.