The 2018 Northern Arizona Lumberjacks football team represented Northern Arizona University in the 2018 NCAA Division I FCS football season. They were led by 21st-year head coach Jerome Souers and played their home games at the Walkup Skydome. They were a member of the Big Sky Conference. They finished the season 4–6, 3–4 in Big Sky play to finish in eighth place. On November 19, Jerome Souers announced his retirement. He finished with a 21 year record of 123–114.