1966 Oregon Webfoots football team

The 1966 Oregon Webfoots football team represented the University of Oregon during the 1966 college football season. Home games were played on campus in Eugene at Hayward Field and at Multnomah Stadium in Portland.

Under sixteenth-year head coach Len Casanova, the Ducks were 3–7 overall and 1–3 in the Athletic Association of Western Universities (AAWU, later Pacific-8 Conference, or Pac-8). Only one of the four conference teams from the state of California was on the schedule, Stanford in Portland, the sole conference victory.

Oregon finished in a tie for sixth place in the AAWU, and were outscored by their opponents, 129 to 118. The team's statistical leaders included Mike Barnes with 710 passing yards, Steve Jones with 542 rushing yards, and Scott Cress with 402 receiving yards.

This was the final season for Casanova as head coach and for varsity football at Hayward Field; Autzen Stadium debuted in 1967 with new head coach Jerry Frei. Casanova became athletic director and retired in 1970.