Raymond Molinier (1904–1994) was a leader of the Trotskyist movement in France and a pioneer of the Fourth International.^[1]

Molinier was born in Paris. In 1929, founded the journal La Vérité,^[1] and in March 1936 he and Pierre Frank co-founded the Parti communiste internationaliste, which merged with two other groups to form the Parti ouvrier internationaliste in June of that year.^[2] At the outbreak of World War II Molinier was abroad and only returned after the cessation of hostilities. He was later active with the Ligue communiste révolutionnaire (LCR).^[1] Eventually, he moved to Latin America under the name of "Leon Droeven".^[3]