Hamner is a surname. Notable people with the surname include:
Cully Hamner (born 1969), American comic book artistEarl Hamner, Jr. (1923-2016), American television writer and producerGranny Hamner (1927–1993), American shortstop and second baseman in Major League BaseballHenry K. Hamner (1922–1945), United States Navy officerScott Hamner (21st century), American television writer