Henry Gregory may refer to:
Henry Gregory (instrument maker) (1744–1782), English mathematical and optical instrument maker Henry Gregory (politician) (1860–1940), Australian politician Sir Henry Holman Gregory (1864–1947), British MP for South Derbyshire, 1918–1922 Henry Gregory (cricketer) (born 1936), English cricketer
See also Harry Gregory (disambiguation) Gregory W. Henry, American astronomer