Hilduin III, Count of Montdidier

Hilduin III (died after 1032), Count of Montdidier, Seigneur de Ramerupt, son of Hilduin II, Count of Arcis-sur-Aube. He was a member of the House of Montdidier. Virtually nothing is known about his life.

Hilduin married Lessaline de Dammartin, although, when widowed, she apparently married Renaud I, Count of Soissons as her second husband. Hilduin and his wife had three children:
 * Hilduin IV, Count of Montdidier
 * Manasses de Ramerupt
 * Guilliume.

Upon his death, Hilduin III was succeeded by his son Hilduin IV as Count of Montdidier.