Count Philipp I of Hanau-Münzenberg, nicknamed Philipp the Younger, (20 September 1449, at Windecken Castle – 26 August 1500) was a son of Count Reinhard III of Hanau and Countess Palatine Margaret of Mosbach. He was the Count of Hanau from 1452 to 1458. The county was then divided between him and his uncle Philipp the Elder. Philipp the Younger received Hanau-Münzenberg and ruled there from 1458 until his death.