2004 Ohio State Buckeyes
Head Coach: Jim Tressel (4th season)
Stadium: Ohio Stadium, Columbus, OH
Record: 8-4 (4-4 Big Ten)
Previous: 2003
Next: 2005
Schedule/Results[]
| Date | Opponent | Result | Score | Record |
| 9/4 | Cincinnati | W | 27-6 | 1-0 |
| 9/11 | Marshall | W | 24-21 | 2-0 |
| 9/18 | at North Carolina State | W | 22-14 | 3-0 |
| 10/2 | at Northwestern | L | 27-33 (OT) | 3-1 (0-1) |
| 10/9 | Wisconsin | L | 13-24 | 3-2 (0-2) |
| 10/16 | at Iowa | L | 7-33 | 3-3 (0-3) |
| 10/23 | Indiana | W | 30-7 | 4-3 (1-3) |
| 10/30 | Penn State | W | 21-10 | 5-3 (2-3) |
| 11/6 | at Michigan State | W | 32-19 | 6-3 (3-3) |
| 11/13 | at Purdue | L | 17-24 | 6-4 (3-4) |
| 11/20 | Michigan | W | 37-21 | 7-4 (4-4) |
| Alamo Bowl (at Alamodome, San Antonio, TX) | ||||
| 12/29 (Wed) | Oklahoma State | W | 33-7 | 8-4 (4-4) |
Notes[]
Ohio State's October 2 loss to Northwestern was the Buckeyes' first defeat against the Wildcats since 1971. It was also the first time Ohio State lost in Evanston since 1958.