The 2006 NCAA Division I FBS football season was the highest level of college football competition in the United States organized by the National Collegiate Athletic Association (NCAA). The regular season began on August 31, 2006, and ended on December 2, 2006. The postseason concluded on January 8, 2007, with the BCS National Championship Game in Glendale, Arizona, where the No. 2 Florida Gators defeated the No. 1 Ohio State Buckeyes by a score of 41–14 to win the national title. The Boise State Broncos were the year's only undefeated team in both levels of Division I football after defeating Oklahoma in the Fiesta Bowl.

Rules changes

The NCAA instituted the following rule changes for the 2006 season.

Regular season top 10 matchups

Rankings reflect the AP Poll. Rankings for Week 8 and beyond will list BCS Rankings first and AP Poll second. Teams that failed to be a top 10 team for one poll or the other will be noted.

Conference standings

Conference champions

Conference championship games

Rankings reflect the Week 14 AP Poll before the games were played.

Other conference champions

Rankings are from the Week 15 AP Poll.

• Received conference's automatic BCS bowl bid.

BCS rankings progress

Ohio State was ranked No. 1 in all of the BCS-component polls (AP, Coaches', USA Today) in the preseason and the 14 polls taken in the regular season. When the BCS rankings began on October 15, Ohio State was No. 1 on all 8 rankings released during the season.

Bowl games

Winners are listed in boldface.

Bowl Championship Series

The Bowl Championship Series selected the No. 1 and No. 2 ranked teams to play for the national championship on January 8. The 2006 season marked a change for the BCS system, as the BCS National Championship Game became a standalone bowl game for the first time, to be played at the site of one of the four BCS bowls (the Fiesta, Orange, Sugar, and Rose Bowls) on a rotating basis. Under the previous format used from 1998 to 2006, the BCS National Championship coincided with one of the BCS bowls. The 2007 BCS Championship Game was played in Glendale, Arizona, the week after the Fiesta Bowl had been played there. Rankings are from the Week 15 AP Poll.

January bowl games

December bowl games

Bowl Challenge Cup standings

Awards and honors

Heisman Trophy voting

The Heisman Trophy is given to the year's most outstanding player

Other major award winners

Postseason coaching changes