Tammer is a surname. Notable people with the surname include: Christiane Tammer, German mathematician Erik Tammer (born 1969), Dutch football player Harald Tammer (1899–1942), Estonian weightlifter, athlete and journalist Peter Tammer (born 1943), Australian film director Frances Tammer (born 1955), Professor of Practice, University of Exeter

See also Hotel Tammer, hotel in Tampere, Finland