Saint Remigius, Remy or Remi, (French: Saint Rémi or Saint Rémy; Italian: Remigio; Spanish: Remigio; Occitan: Romieg; Polish: Remigiusz; and Breton: Remig), was Bishop of Reims and Apostle of the Franks, (c. 437 – January 13, 533). On 24 December 496 he baptised Clovis I, King of the Franks. This baptism, leading to the conversion of the entire Frankish people to Nicene Christianity, was a momentous success for the Catholic Church and a seminal event in European history.

Remigius was born, traditionally, at Cerny-en-Laonnois, near Laon, Picardy, into the highest levels of Gallo-Roman society. He is said to have been the son of Emilius, count of Laon (who is not otherwise attested) and of Celina, daughter of the Bishop of Soissons, which Clovis had conquered in 486. He studied at Reims and soon became so noted for his learning and sanctity, in addition to his high status, that he was elected Bishop of Reims in his twenty-second year, though still a layman.

The story of the return of the sacred vessels (most notably the Vase of Soissons), which had been stolen from the church of Soissons testifies to the friendly relations existing between him and Clovis, King of the Franks, whom he converted to Christianity with the assistance of Saint Vedast (Vedastus, Vaast, Waast) and Saint Clotilde, the Burgundian princess who was wife to Clovis. Even before he embraced Christianity, Clovis had showered benefits upon Remigius and the Christians of Reims, and after his victory over the Alamanni in the battle of Tolbiac (probably 496), he requested Remigius to baptize him at Reims (December 24, 496) in the presence of a large company of Franks and Alamanni: according to Saint Gregory of Tours, 3,000 Franks were baptized with Clovis.