Marcel Déat (7 March 1894 – 5 January 1955) was a French socialist politician until 1933, when he initiated a spin-off from the French Section of the Workers' International (SFIO) along with other right-wing 'Neosocialists'.
During the occupation of France by Nazi Germany, he founded the collaborationist National Popular Rally (RNP).
In 1944, he became Minister of Labour and National Solidarity in Pierre Laval's government in Vichy, before escaping to the Sigmaringen enclave along with Vichy officials after the Allied landings in Normandy.
Condemned in absentia for collaborationism, he died while still in hiding in Italy.