The 1931 All-Big Ten Conference football team consists of American football players selected to the All-Big Ten Conference teams chosen by various selectors for the 1931 Big Ten Conference football season.

• Paul Moss, Purdue (AP-1, CPT, UP-1)
• Ivy Williamson, Michigan (AP-1, UP-1)
• Bill Hewitt, Michigan (AP-2, CPT, UP-1 [halfback])
• Bradbury N. Robinson III, Minnesota (AP-2)
• Dick Fencl, Northwestern (UP-2)
• Ted Petoskey, Michigan (UP-2)

• Jack Riley, Northwestern (AP-1, CPT, UP-1)
• Dallas Marvil, Northwestern (AP-1, CPT, UP-1)
• William M. Bell, Ohio State (AP-2)
• Pat Boland, Minnesota (AP-2)
• Howie Auer, Michigan (UP-2)

• Biggie Munn, Minnesota (AP-1, CPT, UP-1
• Greg Kabat, Wisconsin (AP-1, CPT, UP-2 [tackle])
• Joe Zeller, Indiana (AP-2, UP-1)
• James R. Evans, Northwestern (AP-2)
• Sam Horwitz, Chicago (UP-2)
• Joseph T. Gailus, Ohio State (UP-2)

• Maynard Morrison, Michigan (AP-1, CPT, UP-2)
• Ookie Miller, Purdue (AP-2, UP-1)

• Carl Cramer, Ohio State (AP-1, CPT, UP-1)
• Harry Newman, Michigan (AP-2)
• Paul Pardonner, Purdue (UP-2)

• Pug Rentner, Northwestern (AP-1, CPT, UP-1)
• Lew Hinchman, Ohio State (AP-1)
• Jim Purvis, Purdue (CPT)
• Stanley Fay, Michigan (AP-2, UP-2)
• Fred Hecker, Purdue (AP-2, UP-2)

• Jack Manders, Minnesota (AP-1, CPT, UP-1)
• Ollie Olson, Northwestern (AP-2, UP-2)

AP = Associated Press^[1]

CPT = Captain's team, chosen by votes of captains of Big Ten football teams^[2]

UP = United Press^[3]

Bold = Consensus first-team selection of the AP and UP

• 1931 College Football All-America Team