The 2012–13 season was West Ham United's first season back in the Premier League after a one-year absence.

West Ham gained promotion by winning the 2012 Championship play-off final against Blackpool at the end of the 2011–12 campaign.

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

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

Players may hold more than one non-FIFA nationality.