Maarten Cornelis "Martin" Jol (born 16 January 1956) is a Dutch football manager and former midfielder.
Jol played over 400 games during his career which included spells in the Netherlands, Germany, and England, as well as earning three caps with the Dutch national team. He subsequently became a manager and has worked for Roda JC, RKC Waalwijk and AFC Ajax in his homeland, as well as German Bundesliga club Hamburger SV and English Premier League clubs Tottenham Hotspur and Fulham.
Jol was born in The Hague. He started his playing career with an amateur team before joining the local professional side ADO Den Haag. He turned professional with Den Haag in 1973. He won the 1975 Dutch Cup with the team defeating FC Twente. He played in the Bundesliga for the 1978–79 season with Bayern Munich before returning to the Dutch Eredivisie to play for Twente in 1979. While with Twente, he won his first cap for the Netherlands national football team in October 1980. Jol moved to England in 1982, joining West Bromwich Albion. He appeared in the semi-finals of both domestic cup competitions in 1981–82. He signed for Coventry City in 1984 but wanted to leave the club after manager Bobby Gould was asked to leave. Jol returned to Den Haag in 1985, and won the 1985 Dutch Footballer of the Year award in the Eerste Divisie league.