The 2003–04 season was East Bengal Football Club's 8th season in the National Football League, and also marked the club's 84th season. East Bengal successfully defended their league title from the previous season, competing in the 2003-04 NFL. They have also won the 2003 Calcutta Football League and the 2003 ASEAN Club Championship. They became runners-up in the 2003 Super Cup, 2003 Durand Cup and 2003 IFA Shield.