Steinitz is a German surname. Notable people with the surname include:
Clara Steinitz (1852–1931), German writer Wilhelm Steinitz (1836–1900), Czech-Austrian chess player and first official world champion Ernst Steinitz (1871–1928), German mathematician Wolfgang Steinitz (1905–1967), German linguist and ethnologist Paul Steinitz (1909–1988), English conductor and Bach scholar Yuval Steinitz (born 1958), Israeli politician