1966 Wimbledon Championships – Mixed doubles

Ken Fletcher and Margaret Smith successfully defended their title, defeating Dennis Ralston and Billie Jean King in the final, 4–6, 6–3, 6–3 to win the mixed doubles tennis title at the 1966 Wimbledon Championships.

Seeds
🇦🇺 Ken Fletcher / 🇦🇺 Margaret Smith (champions) n/a 🇺🇸 Dennis Ralston / 🇺🇸 Billie Jean King (final) 🇦🇺 Fred Stolle / 🇫🇷 Françoise Dürr (semifinals)