Record*: 77-63, .550 W-L% (5th of 12) (Schedule and Results)
*W-L-T adjusted to 74-63 by NCAA.
SRS: 5.83 (3rd of 12) ▪ SOS: 3.91 (3rd of 12)
Conference Champion: Michigan
Ranked in Preseason AP Poll: 4 (Michigan, Ohio State, Purdue and Wisconsin)
Ranked in Final AP Poll: 5 (Iowa, Michigan, Minnesota, Ohio State and Purdue)
| Rk | Date | Day | Winner/Tie | Pts | Loser/Tie | Pts | Notes | |
|---|---|---|---|---|---|---|---|---|
| 1 | Sep 27, 2003 | Sat | (11) Michigan | 31 | Indiana | 17 | ||
| 2 | Sep 27, 2003 | Sat | Michigan State | 20 | (13) Iowa | 10 | ||
| 3 | Sep 27, 2003 | Sat | (24) Minnesota | 20 | @ | Penn State | 14 | |
| 4 | Sep 27, 2003 | Sat | (4) Ohio State | 20 | Northwestern | 0 | ||
| 5 | Sep 27, 2003 | Sat | Wisconsin | 38 | @ | Illinois | 20 | |
| Rk | Date | Day | Winner/Tie | Pts | Loser/Tie | Pts | Notes | |
| 6 | Oct 4, 2003 | Sat | (23) Iowa | 30 | (9) Michigan | 27 | ||
| 7 | Oct 4, 2003 | Sat | (25) Michigan State | 31 | Indiana | 3 | ||
| 8 | Oct 4, 2003 | Sat | (21) Minnesota | 42 | @ | Northwestern | 17 | |
| 9 | Oct 4, 2003 | Sat | (22) Purdue | 43 | Illinois | 10 | ||
| 10 | Oct 4, 2003 | Sat | Wisconsin | 30 | @ | Penn State | 23 | |
| Rk | Date | Day | Winner/Tie | Pts | Loser/Tie | Pts | Notes | |
| 11 | Oct 10, 2003 | Fri | (20) Michigan | 38 | @ | (17) Minnesota | 35 | |
| 12 | Oct 11, 2003 | Sat | (21) Michigan State | 49 | @ | Illinois | 14 | |
| 13 | Oct 11, 2003 | Sat | Northwestern | 37 | @ | Indiana | 31 | |
| 14 | Oct 11, 2003 | Sat | (18) Purdue | 28 | Penn State | 14 | ||
| 15 | Oct 11, 2003 | Sat | (23) Wisconsin | 17 | (3) Ohio State | 10 | ||
| Rk | Date | Day | Winner/Tie | Pts | Loser/Tie | Pts | Notes | |
| 16 | Oct 18, 2003 | Sat | (17) Michigan | 56 | Illinois | 14 | ||
| 17 | Oct 18, 2003 | Sat | (15) Michigan State | 44 | @ | (25) Minnesota | 38 | |
| 18 | Oct 18, 2003 | Sat | (8) Ohio State | 19 | (9) Iowa | 10 | ||
| 19 | Oct 18, 2003 | Sat | (13) Purdue | 26 | @ | (14) Wisconsin | 23 | |
| Rk | Date | Day | Winner/Tie | Pts | Loser/Tie | Pts | Notes | |
| 20 | Oct 25, 2003 | Sat | (16) Iowa | 26 | Penn State | 14 | ||
| 21 | Oct 25, 2003 | Sat | (13) Michigan | 31 | (10) Purdue | 3 | ||
| 22 | Oct 25, 2003 | Sat | Minnesota | 36 | @ | Illinois | 10 | |
| 23 | Oct 25, 2003 | Sat | Northwestern | 16 | (20) Wisconsin | 7 | ||
| 24 | Oct 25, 2003 | Sat | (8) Ohio State | 35 | @ | Indiana | 6 | |
| Rk | Date | Day | Winner/Tie | Pts | Loser/Tie | Pts | Notes | |
| 25 | Nov 1, 2003 | Sat | (13) Iowa | 41 | Illinois | 10 | ||
| 26 | Nov 1, 2003 | Sat | (11) Michigan | 27 | @ | (9) Michigan State | 20 | |
| 27 | Nov 1, 2003 | Sat | (24) Minnesota | 55 | Indiana | 7 | ||
| 28 | Nov 1, 2003 | Sat | (8) Ohio State | 21 | @ | Penn State | 20 | |
| 29 | Nov 1, 2003 | Sat | (18) Purdue | 34 | Northwestern | 14 | ||
| Rk | Date | Day | Winner/Tie | Pts | Loser/Tie | Pts | Notes | |
| 30 | Nov 8, 2003 | Sat | Indiana | 17 | Illinois | 14 | ||
| 31 | Nov 8, 2003 | Sat | (24) Minnesota | 37 | Wisconsin | 34 | ||
| 32 | Nov 8, 2003 | Sat | Northwestern | 17 | Penn State | 7 | ||
| 33 | Nov 8, 2003 | Sat | (7) Ohio State | 33 | (14) Michigan State | 23 | ||
| 34 | Nov 8, 2003 | Sat | (16) Purdue | 27 | (10) Iowa | 14 | ||
| Rk | Date | Day | Winner/Tie | Pts | Loser/Tie | Pts | Notes | |
| 35 | Nov 15, 2003 | Sat | (20) Iowa | 40 | (19) Minnesota | 22 | ||
| 36 | Nov 15, 2003 | Sat | (5) Michigan | 41 | @ | Northwestern | 10 | |
| 37 | Nov 15, 2003 | Sat | (4) Ohio State | 16 | (11) Purdue | 13 | ||
| 38 | Nov 15, 2003 | Sat | Penn State | 52 | Indiana | 7 | ||
| 39 | Nov 15, 2003 | Sat | Wisconsin | 56 | (21) Michigan State | 21 | ||
| Rk | Date | Day | Winner/Tie | Pts | Loser/Tie | Pts | Notes | |
| 40 | Nov 22, 2003 | Sat | (17) Iowa | 27 | @ | Wisconsin | 21 | |
| 41 | Nov 22, 2003 | Sat | (5) Michigan | 35 | (4) Ohio State | 21 | ||
| 42 | Nov 22, 2003 | Sat | Michigan State | 41 | Penn State | 10 | ||
| 43 | Nov 22, 2003 | Sat | Northwestern | 37 | @ | Illinois | 20 | |
| 44 | Nov 22, 2003 | Sat | (16) Purdue | 24 | @ | Indiana | 16 |