Associazione Calcio Pisa 1909 (formerly Pisa Calcio) is an Italian football club, based in Pisa, Tuscany. The club was founded in 1909 as Pisa Sporting Club and refounded in 1994 as A.C. Pisa (and registered to the Eccellenza, that is the sixth football division in Italy), after the cancellation of the old one because of economical troubles. It assumed the current denomination in 1995, but was excluded again from Italian football in 2009, after the property failed to collect enough money to pay off the club's debts. The team's colors are blue and black. The team currently plays in Lega Pro Prima Divisione.
Pisa has won two Mitropa Cups, in 1985 and 1988. They play their home matches at Arena Garibaldi - Stadio Romeo Anconetani, named after Romeo Anconetani, the chairman who brought and led the club in Serie A during the 1980s and the 1990s.
Pisa has played the 2008-09 season in the Serie B, after having lost to U.S. Lecce in a two-legged promotion playoff final to Serie A. The club marked its last Serie A appearance in 1991.