Peter David Manley (born 7 March 1962) is an English former professional darts player who played in Professional Darts Corporation (PDC) events from July 1996 until 2017. He won one major title, the Las Vegas Desert Classic, in 2003, and twice held the number one ranking. He also reached the World Championship final in 1999, 2002 and 2006, losing to Phil Taylor on each occasion. Declining form led to him losing his place on the PDC tour in 2011.