The 1951 Arizona State–Flagstaff Lumberjacks football team was an American football team that represented Arizona State College at Flagstaff (now known as Northern Arizona University) in the Border Conference during the 1951 college football season. In its first year under head coach John Pederson, the team compiled a 1–7 record (0–1 against conference opponents), was outscored by a total of 211 to 76, and finished last of eight teams in the Border Conference.^[1][2]

The team played its home games at Skidmore Field in Flagstaff, Arizona.

Date	Opponent	Site	Result	Attendance	Source
September 14	at New Mexico Highlands*	Las Vegas, NM	L 6–13		[3]
September 22	at New Mexico*	Zimmerman Field Albuquerque, NM	L 6–55	7,500	[4]
September 29	Caltech*	Skidmore Field Flagstaff, AZ	L 14–28		[5]
October 6	Whittier*	Skidmore Field Flagstaff, AZ	W 6–0		[6][7]
October 20	La Verne*	Skidmore Field Flagstaff, AZ	L 12–13		[8]
October 27	at Idaho State*	Pocatello, ID	L 20–34		[9][10]
November 3	at New Mexico A&M	Memorial Stadium Las Cruces, NM	L 12–48		[11]
November 12	New Mexico Western*	Skidmore Field Flagstaff, AZ	L 0–20		[12]
*Non-conference game Homecoming