Mark Geoffrey Crossley (born 16 June 1969) is an English-born Welsh former professional footballer. As a player, he was a goalkeeper from 1988 until 2011 and he has previously played for numerous clubs in England's top flight, notably for Nottingham Forest, where he became the only goalkeeper to stop a Matt Le Tissier penalty kick. He has also played for Manchester United, Milwall, Middlesbrough, Stoke City, Fulham, Sheffield Wednesday, Oldham Athletic and Chesterfield. He earned 8 international caps playing for Wales between 1997 and 2004.