Antoine Ritti (6 February 1844, Strasbourg - 23 January, 1920, Paris) was a French psychiatrist. Ritti, whose uncle was Andreas Räss, the Bishop of Strasbourg, seemed originally destined to become a priest. However he chose to take up a medical career. He began his training as a psychiatrist at the asylum of Fains Meuse. He became influenced by the ideas of Auguste Comte becoming a positivist. In 1869 this time he published his first work, La Pensée Nouvelle. Following the outbreak of the Franco-Prussian war he left Alsace for Paris, working at the Lariboisière Hospital during the Paris Commune. He obtained an in-house post at the Charenton Asylum. In 1878 he was appointed to a doctor's office in Charenton, a position he held until his retirement in 1909.