The 2005 NCAA Division I-A 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 September 1, 2005 and ended on December 3, 2005. The postseason concluded on January 4, 2006 with the Rose Bowl, which served as the season's BCS National Championship Game.

The 2006 Rose Bowl Game, played on January 4, 2006, at the Rose Bowl in Pasadena, California, was an American college football bowl game that served as the BCS National Championship Game for the 2005 NCAA Division I-A football season. It featured the only two unbeaten teams of the season: the defending Rose Bowl champion and reigning Big 12 Conference champion Texas Longhorns played Pacific-10 Conference titleholders and two-time defending AP national champions, the USC Trojans. Texas would defeat USC 41–38 to capture its fourth football championship in program history and first consensus national title since 1969. The game was a back-and-forth contest; Texas's victory was not secured until the game's final nineteen seconds. Vince Young, the Texas quarterback, and Michael Huff, a Texas safety, were named the offensive and defensive Rose Bowl Players of the Game. ESPN named Young's fourth-down, game-winning touchdown run the fifth-highest rated play in college football history. The game is the highest-rated BCS game in TV history with 21.7% of households watching it, and is often considered the greatest Rose Bowl game of all time, as well as the greatest college football game ever played.