Hillin of Fallemanien (also called Hillin of Fallenmaigne or Falemagne; c. 1100 - 23 October 1169) was the Archbishop of Trier from 1152 until 1169.

Hillin was born in Falemagne in the area around Liège to a local lordly family. Hillin was educated in France, and he maintained friendship with Bernard of Clairvaux, Hildegard of Bingen, and Elizabeth of Schönau. In 1130 Hillin moved to Trier, and in 1142 he was put in charge of the cathedral school. In 1152 he received office in the cathedral. He was elected the Archbishop of Trier in 1152, the same year that Frederick I Barbarossa became the Holy Roman Emperor. Hillin was a partisan of Frederick, and accompanied him on his Italian campaign in 1154-5. During Frederick's coronation, Hillin was the legate of Pope Hadrian IV.

With the assistance of Frederick, Hillin defended the archdiocese from Conrad, the Rhenish Palatine, who supported the citizenry of the city of Trier in their efforts to obtain Imperial immediacy. In the conflict between the Emperor and the Pope, Hillin supported the Emperor and his Antipope Victor IV, the latter of which made Hillin his legate. In 1165, he however switched to the Papal camp and supported Pope Alexander III.

Hillin died in Trier in 1169. During his reign he expanded Fortress Ehrenbreitstein, a strategic fortress on the River Rhine, he renovated the archbishops palace, and improved the fortifications of Trier through the addition of a moat and a five-sided donjon which also housed a cistern.

Preceded by:

Hillin of Fallemanien

Succeeded by:

Adalberon of Munsterol Archbishop of Trier
1152 - 1169
Arnold I of Valencourt