2005 Northwestern State Demons football team

The 2005 Northwestern State Demons football team represented Northwestern State University as a member of the Southland Conference during the 2005 NCAA Division I-AA football season. Led by fourth-year head coach Scott Stoker, the Demons compiled an overall record of 5–5 with a mark of 3–3 in conference play, tying for third place in the Southland. Northwestern State played home games at Harry Turpin Stadium in Natchitoches, Louisiana.