The 2013 Northern Arizona Lumberjacks football team represented Northern Arizona University in the 2013 NCAA Division I FCS football season.

They were led by 16th-year head coach Jerome Souers and played their home games at the Walkup Skydome.

They were a member of the Big Sky Conference.

They were received an at-large bid to the FCS Playoffs where they lost in the first round to South Dakota State.

[1] Despite also being a member of the Big Sky Conference, the game with UC Davis on September 14 is considered a non conference game and will have no effect on the Big Sky Standings.