Hilduin (or Hildwin, Hilduinus, etc.) may refer to:
(died 847) (died 849) Hilduin of Saint-Denis (died 855/9), abbot, archchaplain and bishop (died 860), abbot Hilduin of Saint-Germain-des-Prés (fl. 854–867), abbot, archchaplain and bishop (died 870) (died 877), abbot (died 936), also bishop of Liège and Verona Hilduin I, Count of Montdidier (died before 956) Hilduin II, Count of Arcis-sur-Aube (died after 993) Hilduin (bishop of Limoges) () Hilduin III, Count of Montdidier (died after 1032) (died 1055), lord of Nully Hilduin IV, Count of Montdidier (died 1063) (died 1203), bishop of Langres
See also Alduin (disambiguation) Gilduin (disambiguation)