Città di Isernia San Leucio Società Sportiva Dilettantistica, commonly known as Città di Isernia or just Isernia, is an Italian association football club based in the city of Isernia, Molise. The club currently plays in Serie D. Their nickname is "pentri" (this is the name of the most important tribe of the Samnites). They play their home matches at Stadio Mario Lancellotta.
After going bankrupt in 2004, the club was immediately re-founded as A.S.D. Sporting Isernia and in 2007 was merged with A.S.D. Aesernia to form A.S.D. Sporting Aesernia.
From Real Isernia to Isernia F.C.
In the summer of 2009, the new club that played in Promozione was merged with A.S.D. Real Rocca d'Evandro 2006 of Scapoli, in Eccellenza Molise, founding A.S.D. Real Isernia.
First classified in 2010–11Eccellenza Molise,[6] in the summer 2011 the club was renamed Isernia F.C. playing from the 2011–2012 season in Serie D.