Godfrey of Viterbo (c. 1120 – c. 1196) was a Roman Catholic chronicler, either Italian or German. From an early age he displayed great activity as one of the clergy at the court of Conrad III and later Frederick I, accompanying the latter on many of his campaigns, and frequently fulfilling for him diplomatic missions.
He was probably an Italian by birth, although some authorities assert that he was a Saxon German like his imperial patrons. He evidently passed some of his early life at Viterbo in Italy, but he was educated at Bamberg, where he was taken by Lothair in 1133, gaining a good knowledge of Latin, possibly preparing for work in governmental service. Following his education, he began working in the Papal Chancellery. In the following years he was active in both governmental and ecclesiastical offices. About 1140 he became chaplain to the German king, Conrad III; but the greater part of his life was spent as secretary (notarius) in the service of the Holy Roman Emperor Frederick I Barbarossa, who appears to have thoroughly trusted him, and who employed him on many diplomatic errands, traveling extensively throughout Europe, including over forty trips to Rome. Incessantly occupied, he visited Sicily, France, and Spain, in addition to many of the German cities, in the emperor's interests, and was by his side during several of the Italian campaigns. As a reward for his services at court, lands were bestowed on him in fief, probably in 1169, at Viterbo where he also spent his concluding days.