Jacques Gaillot was a French Catholic clergyman and social activist. He was Bishop of Évreux in France from 1982 to 1995. In 1995, Pope John Paul II removed him as head of his diocese because he publicly expressed controversial and heterodox positions on religious, political, and social matters. These views earned Gaillot the popular nickname "the Red Cleric."

The Diocese of Évreux is a Latin Church diocese of the Catholic Church in France. The diocese comprises the department of Eure within the Region of Normandy. The diocese is a suffragan of the Archdiocese of Rouen,