Philip Basset (c. 1185 – 19 October 1271) was the Justiciar of England.
Philip was the son of Alan Basset of High Wycombe in Buckinghamshire and his wife, Aline Degai.
He inherited the manor of Wycombe; the town received market borough status in 1237.
Basset served as the Justiciar of England between the two terms served by his son-in-law, Hugh le Despencer, 1st Baron le Despencer.
He served during the period that Henry III regained control of the government from the Barons.
Philip's first wife was Hawise de Lovaine, and their daughter, Alina, was his sole heir. Alina married first Hugh Despenser, and second, after his death, Hugh Bigod's son, Roger (d. 1306), who became Earl of Norfolk.
Philip married secondly, circa 1254/5, Ela, the daughter of William Longespée, Earl of Salisbury, and widow of Thomas, Earl of Warwick.
Philip was a younger son and eventual heir (after the death of his brother Fulk, bishop of London) of his father Alan.