Graul is a surname. Notable people with this surname include:
Barry Graul, part of the American musical band MercyMe Elta Danneel Graul (born 1979), American actress Jean Graul (1924–2015), Swiss sailor Karl Graul (1814–1864), German missionary Richard Graul (1862–1944), German art historian and museum curator Thomas Graul (born 1962), German ice hockey player William L. Graul (1846–1909), American soldier Volker Graul (1952–2022), German football player