During the 2003–04 season, Rotherham United participated in the Football League First Division.

Rotherham slumped somewhat following last season's comfortable midtable finish and ended the season in 17th, three points from the relegation zone.

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

Players may hold more than one non-FIFA nationality.

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