Radulf or Radulph may refer to:
Ordered chronologically. Radulf, King of Thuringia, 7th-century noble, Duke of Thuringia who proclaimed himself King of Thuringia in 642 Radulf of Narbonne (), Count of Nimes Radulf II, Duke of Thuringia (died before 880) Radulf of Besalú (died 920), Count of Besalú Radulf II, Abbot of Kinloss (died 1220) Radulf the Cistercian, mid-12th-century French monk who called for the killing of Jews Radulf of Brechin, early 13th-century bishop of Brechin
See also Ralph (disambiguation) Rudolph (disambiguation) List of rulers of Thuringia