The 1981 Oregon State Beavers football team represented Oregon State University in the Pacific-10 Conference (Pac-10) during the 1981 NCAA Division I-A football season. In their second season under head coach Joe Avezzano, the Beavers compiled a 1–10 record (0–7 against Pac-10 opponents), finished in last place in the Pac-10, and were outscored by their opponents, 469 to 145. The team played its home games at Parker Stadium in Corvallis, Oregon.