Tietz is a surname. Notable people with the surname include:
Anton Ferdinand Tietz (1742–1810), German composer Christiane Tietz (born 1967), German protestant theologian and leading church president in Hesse Gerold Tietz (1941–2009), German author Hermann Tietz (1837–1907), merchant and founder of one of the first German department stores Hermann Tietz (rabbi) (1834–????), German rabbi Leonhard Tietz (1849–1914), merchant and founder of one of the first German department stores Marion Tietz (born 1952), East German handball player and Olympian Oscar Tietz (1858–1923), German merchant and businessman Phillip Tietz (born 1997), German footballer Viktor Tietz (1859–1937), Czech–German chess player, chess life organizer and local politician
Named after people with this surname Kulturkaufhaus Tietz Tietz syndrome
Other uses an old name of the town Tütz in Hinterpommern; now Tuczno in West Pomeranian Voivodeship, in northwestern Poland