1931 Muskingum Fighting Muskies football team

The 1931 Muskingum Fighting Muskies football team was an American football team that represented Muskingum University of New Concord, Ohio, as a member of the Ohio Athletic Conference (OAC) during the 1931 college football season. In their ninth season under head coach Bill Lange, the Fighting Muskies compiled a perfect 8–0 record (4–0 against OAC opponents), won the OAC championship, shut out six of eight opponents, and outscored all opponents by a total of 138 to 12.

The 1931 season was one of four perfect seasons in Muskingum football history, along with 1926, 1955, and 1960.