The 2011 season was Seongnam Ilhwa Chunma's twenty-third season in the K-League in South Korea.

Seongnam Ilhwa Chunma was competing in K-League, League Cup and Korean FA Cup.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Players may hold more than one non-FIFA nationality.

Statistics accurate as of match played 30 October 2011