Robert Dietz

Robert or Bob Dietz may refer to:


 * Robert H. Dietz (1921–1945), American Medal of Honor recipient
 * Robert S. Dietz (1914–1995), American geophysicist and oceanographer
 * Robert Edwin Dietz (1818–1897), American businessman
 * Bob Dietz (1917–1999), American professional basketball player
 * Robert L. Deitz (1950-), American lawyer and intelligence officer