The 1999 Northern Illinois Huskies football team represented Northern Illinois University as a member of the West Division of the Mid-American Conference (MAC) during the 1999 NCAA Division I-A football season. Led by fourth-year head coach Joe Novak, the Huskies compiled an overall record of 5–6 with a mark of 5–3 in conference play, tying for second place in the MAC's West Division. Northern Illinois played home games at Huskie Stadium in DeKalb, Illinois.