| 1998 NCAA Division I-A football rankings | |
|---|---|
| Season | 1998 |
| Bowl season | 1998–99 bowl games |
| Preseason No. 1 | |
| End of season champions | Tennessee |
| Conference with most teams in final AP poll | Big Ten, Big 12 (5) |
Two human polls and one formulaic ranking made up the 1998 NCAA Division I-A football rankings. Unlike most sports, college football's governing body, the National Collegiate Athletic Association (NCAA), did not bestow a National Championship title for Division I-A football. That title was primarily bestowed by different polling agencies. There were several polls that currently existed. The main weekly polls were the AP Poll and Coaches Poll. The Bowl Championship Series (BCS) standings made their debut in 1998, and began being released about halfway through the season.