Philip D. Estes (born June 7, 1958) is an American college football coach and former player. He was the head football coach at Brown University from December 1997 until stepping down in November 2018. Estes compiled a 115-94 record during his tenure at Brown University. He was the most successful coach at Brown University since the inception of the Ivy League in 1956. His three Ivy League championships are also the most of any Brown coach in the Ivy League era.