1998 NCAA Division I-A football rankings AP poll AP poll

| Preseason | Week_1_Sept_7 | Week_2_Sept_14 | Week_3_Sept_21 | Week_4_Sept_28 | Week_5_Oct_5 | Week_6_Oct_12 | Week_7_Oct_19 | Week_8_Oct_26 | Week_9_Nov_2 | Week_10_Nov_9 | Week_11_Nov_16 | Week_12_Nov_23 | Week_13_Nov_30 | Week_14_Dec_7 | Week_15_Final_Jan_5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wisconsin | West Virginia (0-1) | NC State (2-0) | Oregon (3-0) | Washington (2-1) | Arkansas (4-0) | Missouri (4-1) | Georgia Tech (5-1) | Virginia Tech (6-1) | Texas (6-2) | Oregon (7-2) | Air Force (9-1) | Virginia Tech (8-2) | Texas (8-3) | Texas (8-3) | Miami (FL) (9-3) |
| Southern Miss | Arizona (1-0) | Missouri (2-0) | Virginia Tech (3-0) | USC (3-1) | Missouri (3-1) | LSU (3-2) | Syarcuse (4-2) | West Virginia (4-2) | Oregon (6-2) | Virginia (7-2) | Georgia Tech (7-2) | Syracuse (7-3) | Oregon (8-3) | Oregon (8-3) | Missouri (8-4) |
| Notre Dame | USC (1-0) | Oregon (2-0) | Alabama (2-0) | Arkansas (3-0) | Notre Dame (3-1) | Texas Tech (6-0) | Tulane (5-0) | Michigan (5-2) | Michigan (6-2) | Georgia Tech (6-2) | Miami (FL) (6-2) | Oregon (8-3) | Penn State (8-3) | Penn State (8-3) | Notre Dame (9-3) |