Amadeus of Lausanne was a 12th-century Cistercian monk who served as the abbot of Hautecombe Abbey and later as the bishop of Lausanne. Born around 1110 in Chatte, he was the son of Count Amadeus the Elder. After spending time at the court of Emperor Henry V, he joined the Abbey of Clairvaux under Bernard of Clairvaux. His leadership as an abbot and his subsequent tenure as a bishop helped bring spiritual and administrative stability to his regions.