Jeunesse ouvrière chrétienne
Jean-Yves Le Drian was born in Lorient to working-class parents, Jean and Louisette, who were active members of the Young Christian Workers ("Jeunesse ouvrière chrétienne", JOC). He completed his studies at the University of Rennes 2, where he was an activist for the Union Nationale des Étudiants de France (UNEF). First of all interested by Breton Democratic Union (UDB) in the 1970s, he joined the Socialist Party (PS) in May 1974.