Walo II (Galon II de Beaumont) (*1060; † 1098) was a viscount of Chaumont-en-Vexin and a constable of King Philip I of France. He was son of Odo (Eudes) de Beaumont, viscount of Chaumont-en-Vexin. He took a part at the First Crusade as part of the army of Hugh the Great that attempted to capture the Holy Lands, called by Pope Urban II in 1095. Walo was killed by the Turks during the Siege of Antioch on 20 May 1098. Walo was married to , a sister of Everard of Le Puiset, both from the prominent Île-de-France family of Hugh I of Le Puiset. Walo and Humberge had three children: