Robert-Jean Longuet

Robert-Jean Gustave Longuet
Born9 December 1901
Died19 March 1987 (aged 85)
Paris, France
Burial placePère Lachaise Cemetery
OccupationsJournalist, politician, lawyer
Political partyFrench Section of the Workers' International
FatherJean Longuet
FamilyKarl-Jean Longuet (brother)

Robert-Jean Gustave Longuet, (9 December 1901 – 19 March 1987) was a French lawyer, journalist and militant socialist. He was the son of Jean Longuet, and the great-grandson of Karl Marx.

He notably rejected many overtures by Communists to whom it is said he often replied "No. You have falsified my great-grandfather." He was a supporter of Charles De Gaulle during the Second World War.