Philip of Montfort (died September 24, 1270) was a French nobleman, then Lord of Castres in 1270. He was the son of Philip of Montfort, Lord of Tyre and Eleonore of Courtenay. His coat-of-arms was “Gules, a lion rampant double queued argent, a label of four points azure.”
He joined the expedition of Charles of Anjou to conquer the Kingdom of Naples, and he shared command of the first battalion at the Battle of Benevento with Hugh of Mirepoix. He led the Angevin troops into the island of Sicily after Benevento, and helped to put down the revolt that broke out there upon the advance of Conradin into Italy. On his father’s death in March 1270, he succeeded to his French seigneury of Castres, but his father's possessions in Outremer had been granted to his half-brother John of Montfort. He joined the Eighth Crusade and died in Tunis.
He married Jeanne de Levis-Mirepoix (d. May 30, 1284) and had three children: