1998 Tulane Green Wave football team

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.

The team was not invited to a Bowl Championship Series Bowl game due to lack of strength of schedule (they did not play a single ranked team all season, and a lowly Rutgers team was the sole BCS Conference member on the schedule), and 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.

The Green Wave won all of their games by six points or more. The combined 538 points set a single-season school record.