The 1966 Oregon Webfoots football team represented the University of Oregon in the Athletic Association of Western Universities (AAWU) during the 1966 NCAA University Division football season. Three home games were played on campus in Eugene at Hayward Field and one at Multnomah Stadium in Portland. Under sixteenth-year head coach Len Casanova, the Ducks were 3–7 overall and 1–3 in the AAWU (later Pacific-8 Conference, or Pac-8). Only one of its four teams from the state of California was on the schedule, Stanford in Portland, the sole conference victory.