During the 1990–91 English football season, Oldham Athletic A.F.C.

competed in the Football League Second Division.

A 1st-placed finish in the final table saw promotion and a place in the Football League First Division for the 1991–92 season.

Oldham enjoyed promotion to the top flight after an absence of 68 years after finishing in 1st place.

[1] Home team's score comes first Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.