The 1998 Tennessee Volunteers football team represented the University of Tennessee in the 1998 NCAA Division I-A football season. Tennessee entered the 1998 season coming off an 11–2 record in 1997. The Volunteers were given a preseason ranking of No. 10 in the AP Poll.

The 1999 Fiesta Bowl, the designated BCS National Championship Game for the 1998 season, was played on January 4, 1999, in Tempe, Arizona at Sun Devil Stadium. The teams were the Tennessee Volunteers and Florida State Seminoles. Tennessee entered the contest undefeated and number one in the major polls, while Florida State had won 10 straight games after a Week 2 loss to NC State. Florida State sophomore QB Chris Weinke was injured in Florida State's final ACC game of the regular season and did not participate in the championship game. Ultimately, Tennessee won their sixth claimed national championship and first since 1967 by defeating the Seminoles, 23–16. The game was the first BCS National Championship.