The 2008 Texas Tech Red Raiders football team represented Texas Tech University as a member of the Big 12 Conference during the 2008 NCAA Division I FBS football season. Led by ninth-year head coach Mike Leach, the Red Raiders compiled an overall record of 11–2 with a mark of 7–1 in conference play, finishing in a three-way tie with Oklahoma and Texas atop the Big 12 South Division standing. To break the tie, the Bowl Championship Series BCS rankings were used to determine who would face Missouri in Big 12 Championship Game. Oklahoma, ranked No. 2 in the BCS poll, was chosen to represent the South Division in the game. Texas Tech was invited to the Cotton Bowl Classic, where they lost to Ole Miss. The Red Raiders played home games at Jones AT&T Stadium in Lubbock, Texas.

The 2008 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).