The 2011 Northwestern State Demons football team represented Northwestern State University as a member of the Southland Conference during the 2011 NCAA Division I FCS football season.

Led by third-year head coach Bradley Dale Peveto, the Demons compiled an overall record of 5–6 with a mark of 3–4 in conference play, placing fifth in the Southland.

Northwestern State played home games at Harry Turpin Stadium in Natchitoches, Louisiana.