Mainzer

Mainzer is a surname. Notable people with the surname include:


 * Amy Mainzer (born 1974), American astronomer
 * Ferdinand Mainzer (1871–1943), German-Jewish gynaecologist and historical author
 * Klaus Mainzer (born 1947), German scholar and philosopher
 * Klaus Mainzer (rugby union) (born 1979), German international rugby union player
 * Otto Mainzer (1903–1995), German-American writer