Dietz is a surname, and may refer to: August Dietz (1869-1963), a philatelist, editor and publisher Cyrus E. Dietz (1876-1929), Illinois Supreme Court Justice Danny Dietz (1980-2005), United States Navy SEAL and recipient of the [NavyCross G. O. Dietz, American football coach Hendrik Casimir II of Nassau-Dietz Howard Dietz (1896-1983), US-American lyric writer and librettist Isaac Deitz American Independent filmmaker Michael Dietz (born 1971), US-American actor Jan Dietz (born 1945), Dutch compu… (More on Dietz)