Guy de Montfort (died 1220) was the Count of Bigorre[1] from 6 November 1216 to 1220 in right of his wife, Petronilla.
He was a son of Simon de Montfort, 5th Earl of Leicester[2] and Alice of Montmorency.
[5] Guy's oldest brother Amaury de Montfort inherited their father's command, but not his strategic vision.
The Occitan lords rebelled against him and Guy was killed in a conflict at Castelnaudary in 1220, either on 4 April or in July.
He also left a daughter named Pernelle, who married Raoul de la Roche-Tesson.