Wulfar or Wulfaire (died 816) was the archbishop of Reims from 812 until his death. He was an important administrator in the Carolingian Empire, both before and during his episcopate, under the emperors Charlemagne and Louis the Pious.
In 802 Wulfar was the royal missus (representative) in a missaticum comprising the southeast of the ecclesiastical province of Reims. His term as a missus is only recorded the History of the Church of Reims (Historia Remensis ecclesiae) of Flodoard (died 966), in a section based on the Capitulare missorum specialia of 802. The name of Wulfar's lay associate (since missi always worked in clerical–lay pairs) is unknown. Jacques Stiennon first identified a denier from the reign of Charlemagne bearing the inscription FUIFAR as belonging to the missaticum of Wulfar and recording his name as that of the moneyer in charge. An alternate reading and interpretation of this inscription—FIUFAR or ARFIUF, meaning Strasbourg, the location of the mint—has been put forward.
Wulfar also served Charlemagne as a legate in Rhaetia in 807. According to Flodoard, "that Emperor Charlemagne put a great deal of trust in [Wulfar] is proven by the fact that he committed to his safekeeping fifteen noble hostages of the Saxons whom he had brought back from Saxony." As the Saxons were still largely pagan at the time, placing these hostages in an ecclesiastical environment furthered the Christianization of their people. According to Charlemagne's contemporary biographer, Einhard, Wulfar was one of the bishosp who witnessed and signed the emperor's testament of 811, in which he divided his empire between his surviving sons.