Saint Lupus of Sens or Saint Loup de Sens was an early French bishop of Sens.
The Romanesque church dedicated to Saint Loup at Naud, 8 km from Provins in Champagne in the east of France is distinguished by the outstanding sculptures in the porch of its great doorway, with an ambitious iconographic program in which Saint Loup mediates entry into the mystery of the Trinity. About 980, Sevinus, archbishop of Sens made a gift to the Benedictine community of the abbey of Saint-Pierre-le-Vif at Sens of four altars in villa que dicitus Naudus, in honore sancti lupi consecratum—"in the demesne of Naud, consecrated in honor of Saint Loup"—betokening the presence of a shrine already on this site, a priory under the direction of the abbot of Saint-Pierre-le-Vif. Other documents mention Saint-Loup-de-Naud among the possessions of the abbey at Sens, seat of an archbishop with close political ties to the French Crown, who had Paris within his diocese. Thus, though it lay so close to the seat of the counts of Champagne, the priory at Saint-Loup-de-Naud looked to Sens for its patronage: a visit from the abbot is documented in 1120. In 1160/61 Hugues de Toucy, Archbishop of Sens, presented to the priory a relic of Saint Loup; the sculpted portail was doubtless undertaken shortly thereafter.