The 1998 Robert Morris Colonials football team represented Robert Morris College, now Robert Morris University, as a member of the Northeast Conference (NEC) during the 1998 NCAA Division I-AA football season. The Colonials were led by 5th-year head coach Joe Walton and played their home games at Moon Stadium on the campus of Moon Area High School. The Colonials finished the 1998 season with their third consecutive NEC championship.