Deitz is a surname. Notable people with the surname include:Alonzo E. Deitz (1836–1921), American lock manufacturer Doug Deitz (1914–1994), Australian rugby league player Richard Deitz, American hedge fund manager Robert Deitz, American intelligence officer and lawyer Shane Deitz, Australian cricketer Terry Deitz, United States Naval aviator and reality television show contestant Tom Deitz (1952–2009), American writer
