Philip Ι of Montfort (died 17 March 1270, Tyre)[1] was Lord of La Ferté-Alais and Castres-en-Albigeois 1228–1270, Lord of Tyre 1246–1270, and Lord of Toron aft. 1240–1270. He was the son of Guy of Montfort and Helvis of Ibelin (daughter of Balian of Ibelin).[2]