Roland Gaucher (13 April 1919 in Paris – 27 July 2007) was the pseudonym of Roland Goguillot, a French far-right journalist and politician. One of the main thinkers of the French far-right, he had participated in Marcel Déat's fascist party Rassemblement National Populaire (RNP) under the Vichy regime. Sentenced to five years of prison for Collaborationism after the war, he then engaged in a career of journalism, while continuing political activism. One of the co-founders of the National Front (FN) in October 1972, he became a Member of the European Parliament (MEP) for the FN in 1986.
Roland Gaucher entered politics as a far-left activist, first as a member of the Trotskyist group Fédération des étudiants révolutionnaires (Federation of Revolutionary Students) and then of the Jeunesses socialistes ouvrières (Workers' Socialist Youth), where he met with Robert Hersant and Alexandre Hébert, who would become one of the leaders of the social-democrat trade-union Force Ouvrière (FO).
However, Gaucher shifted to the far right during World War II, joining Marcel Déat's Rassemblement National Populaire (RNP) Fascist party in March 1942. He was responsible for the RNP's youth organisation, and for its Parisian section from May to November 1943. He criticized the Vichy regime for being too "moderate" and not executing enough people. At the time of France's Liberation, he was in charge of deleting the archives of the National Populaire 's readers, which was the mouthpiece of the RNP. At the end of 1944, according to Marcel Déat's diary, he fled with Marshal Philippe Pétain's men to the Sigmaringen enclave in Germany.