Giulio Aristide Sartorio (11 February 1860 – 3 October 1932) was an Italian painter and film director from Rome.

He formed friendships with Nino Costa and Gabriele D’Annunzio, and associated with the painters and photographers of the Roman countryside.

Wounded during World War I, he travelled extensively in the Middle East, Japan and Latin America during the 1920s and became a member of the Italian Royal Academy.

His most famous works are: Diana of Ephes and the slaves, Gorgon and the Heroes (1895–99) and a frieze in the Palazzo Montecitorio.

He directed the motion picture Il mistero di Galatea (1919), starring Marga Sevilla, his wife, who studied acting with Eleonora Duse.