Week 5 Football Top 25 Rankings
October 4, 2015 · CSM Staff
| Rank | Team | Record | Next Opponent | Prior | |
| 1 |  |
Ohio State | 5-0, 1-0 | Maryland | 1 |
| 2 |  |
Michigan State | 5-0, 1-0 | at Rutgers | 2 |
| 3 |  |
TCU | 5-0, 2-0 | at Kansas State | 3 |
| 4 |  |
Baylor | 4-0, 1-0 | at Kansas | 4 |
| 5 |  |
Clemson | 4-0, 1-0 | Georgia Tech | 7 |
| 6 |  |
Alabama | 4-1, 1-1 | Arkansas | 10 |
| 7 |  |
LSU | 4-0, 1-0 | at South Carolina | 11 |
| 8 |  |
Utah | 4-0, 1-0 | California | 12 |
| 9 |  |
Florida State | 4-0, 1-0 | Miami | 13 |
| 10 |  |
Mississippi | 4-1, 2-1 | New Mexico State | 5 |
| 11 |  |
UCLA | 4-1, 1-1 | bye | 6 |
| 12 |  |
Notre Dame | 4-1 | Navy | 9 |
| 13 |  |
Georgia | 4-1, 1-1 | at Tennessee | 8 |
| 14 |  |
Oklahoma | 4-0, 1-0 | vs Texas | 15 |
| 15 |  |
USC | 3-1, 1-1 | Washington | 14 |
| 16 |  |
Texas A&M | 5-0, 2-0 | bye | 16 |
| 17 |  |
Oklahoma State | 5-0, 2-0 | at West Virginia | 18 |
| 18 |  |
Northwestern | 5-0, 1-0 | at Michigan | 19 |
| 19 |  |
Stanford | 4-1, 3-0 | bye | 21 |
| 20 |  |
Florida | 5-0, 2-0 | at Missouri | NR |
| 21 |  |
California | 5-0, 2-0 | at Utah | 25 |
| 22 |  |
Michigan | 4-1, 1-0 | Northwestern | NR |
| 23 |  |
Boise State | 4-1, 1-0 | at Colorado State | NR |
| 24 |  |
Toledo | 4-0, 1-0 | Kent State | NR |
| 25 |  |
Iowa | 5-0, 1-0 | Illinois | NR |
