Lupus of Troyes was a 5th-century bishop who served the community in Troyes for over fifty years. Born in Toul to a noble family, he initially worked as a lawyer and managed various estates before choosing a religious life. After donating his wealth to the poor, he joined the Abbey of Lérins. He eventually accepted the position of bishop in Troyes following the recommendation of Germanus of Auxerre, becoming a significant figure in the Gallic church during a period of theological transition.