List of Famous people with last name Longuet

Gérard Longuet is a French conservative politician. He served as French Defense Minister from 27 February 2011 until 15 May 2012.

Jenny Caroline "Jennychen" Marx Longuet was the eldest daughter of Jenny von Westphalen Marx and Karl Marx. Briefly a political journalist writing under the pen name "J. Williams", Longuet taught language classes and had a family of five sons and a daughter before her own death due to cancer at the age of 38.

Jean-Laurent-Frederick Longuet (1876–1938) was a French socialist politician and journalist. He was Karl Marx's grandson.

Charles Félix César Longuet was a journalist and prominent figure in the French working-class movement, including the 1871 Paris Commune, as well as a Proudhonist member of the General Council of the First International or International Working Men's Association. He served as Corresponding Secretary for Belgium (1866), delegate to the Lausanne (1867), Brussels (1868), the London Conference (1871) and the (1872). He was also the editor of the publication Journal Officiel.

Karl-Jean Longuet was a French sculptor. He was the son of Jean Longuet, the grandson of Charles Longuet and the great-grandson of Karl Marx.

Edgar Marcel Longuet, a grandson of Karl Marx, was a French physician and socialist activist.

Robert-Jean Gustave Longuet, was a lawyer, journalist and militant socialist. He was the son of Jean Longuet, and the great-grandson of Karl Marx.