The 2008 Tennessee Volunteers football team represented the University of Tennessee in the 2008 NCAA Division I FBS football season. The team was led by head football coach Phillip Fulmer in his 16th and final season as head coach. The Vols played their home games in Neyland Stadium and competed in the Eastern Division of the Southeastern Conference (SEC). The 2008 campaign followed a 10–4 2007 season, which saw the Vols win the Eastern Division of the conference and the Outback Bowl. This season marked the ten year anniversary of Tennessee's 1998 BCS National Championship. On November 3, Fulmer announced that, after winning some 150 games over his career, he would step down from coaching his alma mater at the end of the season.

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).