| Conference USA|
| No. 7|
12–0 (6–0 C-USA)
| Tommy Bowden (regular season)
Chris Scelfo (bowl game)|1998 Tulane Green Wave football team Wikipedia
The 1998 Tulane Green Wave football team represented Tulane University in the 1998 college football season. The Green Wave finished with a record of 12 wins and no losses, one of only two NCAA Division 1-A teams to complete the season undefeated, the other being the BCS champion Tennessee Volunteers.
Despite finishing undefeated, the Green Wave were not considered for a BCS game, let alone a berth in the 1999 Fiesta Bowl—that year's national title game—because it was felt they had not played a legitimate schedule. They did not play a single ranked team all season, and the only AQ conference member on their schedule was a Rutgers team that finished tied for sixth in the Big East. They defeated Brigham Young University in the Liberty Bowl. The Green Wave finished the season ranked seventh in the nation in both the AP Poll and Coaches' Poll—in both cases, its highest rankings in school history since the 1939 Tulane football season when they were ranked No. 5 in the AP Poll.
The Green Wave won all of their games by six points or more. The combined 538 points set a single-season school record.