The 1966 Football League Cup Final, the sixth Football League Cup final to be staged since the competition's inception, was contested between West Bromwich Albion and West Ham United. It was the last to be played over two legs, with West Brom winning 5–3 on aggregate.

West Ham won the first leg 2–1 at the Boleyn Ground, with West Ham's goals coming from Bobby Moore and Johnny Byrne, with Jeff Astle scoring for West Brom. However, Albion won the second leg 4–1 at The Hawthorns. In the second leg West Brom's goals were scored by Graham Williams, Clive Clark, Tony Brown and John Kaye. Martin Peters with West Ham's consolation.

Home teams listed first.