Sepahan Isfahan (Persian: باشگاه فوتبال فولاد مبارکه ی سپاهان اصفهان‎) is an Iranian football club based in Isfahan, Iran. They compete in Iran's top flight known as Persian Gulf League and hold most of the records in the PGL under their belt. Sepahan are the latest champions of the PGL in 2011–12 season for the record four time in the eleven-year PGL history. They are also the first and only club to have won the title in back-to-back seasons (2009–10, 2010-11 and 2011–12). They became the first non-Tehran based team to win the title in the 2002–03 season.

Sepahan have been the most successful football club in Iran during the 1980s and are one of the only six clubs who have been present in all the PGL editions. They are also the first Iranian club who reached the Asian Champions League final in 2007 and qualified to play in the FIFA Club World Cup the same year.

Sepahan FC is usually referred to as an example for successful and consistent management, and has succeeded in ending the complete dominance of two famous clubs, Persepolis and Esteghlal in the Iranian football. The club is the football division of Foolad Mobarakeh Sepahan Sport Club and is owned by steel company Mobarakeh Steel Co..