Hamner is a surname. Notable people with the surname include:
Cully Hamner (born 1969), American comic book artist Earl Hamner, Jr. (1923–2016), American television writer and producer Garvin Hamner (1924–2003), American baseball player Granny Hamner (1927–1993), American baseball player Henry K. Hamner (1922–1945), United States Navy officer M. Gail Hamner (born 1963), American scholar, author, and professor of religion Millie Hamner, American educator and politician Nora Spencer Hanmer (1945–2001), American baseball player Scott Hamner (born 1956), American television writer
See also Nicholas Hamner Cobbs (1796–1861), Bishop of the Episcopal Church in the United States of America USS Hamner (DD-718), a Gearing-class destroyer Hanmer (disambiguation)