The 2006 Northwestern Wildcats football team represented Northwestern University in the Big Ten Conference during the 2006 NCAA Division I FBS football season. Head coach Randy Walker died unexpectedly on June 29, 2006 of an apparent heart attack at the age of 52. Pat Fitzgerald, seen by many before the tragedy as Walker's eventual successor, was promoted from linebackers coach and recruiting coordinator to head coach on July 7. The Wildcats also had to replace their offensive coordinator, offensive line coach, and Brett Basanez, the team's former four-year starter at quarterback and holder of dozens of school records. Not surprisingly, the 2006 season was not as successful as previous years.