1955 Arizona State–Flagstaff Lumberjacks football team

The 1955 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 New Mexico Conference during the 1955 college football season. In their second and final year under head coach Earl Insley, the Lumberjacks compiled a 0–9 record (0–4 against conference opponents), finished last in the conference, and were outscored opponents by a total of 220 to 72.

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