The 1966 Western Michigan Broncos football team represented Western Michigan University in the Mid-American Conference (MAC) during the 1966 NCAA University Division football season. In their third season under head coach Bill Doolittle, the Broncos compiled a 7–3 record (5–1 against MAC opponents), finished in a tie for first place in the MAC, and were outscored by their opponents, 194 to 175. The team played its home games at Waldo Stadium in Kalamazoo, Michigan.