1966 Formula One season

Jack Brabham won his third and final championship, driving a Brabham-Repco.
John Surtees finished as runner-up in the World Drivers' Championship.
Jochen Rindt finished third in the World Drivers' Championship.
Ferrari finished runner-up with the Ferrari 246 & 312/66.
Cooper-Maserati finished third in the International Cup for F1 Manufacturers with the Cooper T81.

The 1966 Formula One season was the 20th season of FIA Formula One motor racing. It featured the 17th World Championship of Drivers, the 9th International Cup for F1 Manufacturers, and four non-championship races open to Formula One cars. The World Championship was contested over nine races between 22 May and 23 October 1966.

Jack Brabham won the Drivers' Championship in a Brabham-Repco. It was his third and last championship. Brabham was also awarded the International Cup for F1 Manufacturers, their first title. As of the 2025 season, 1966 is the only time the World Championship has been won by a driver in a car of his own construction and bearing his own name.

John Taylor collided with Formula Two driver Jacky Ickx during the German Grand Prix. Taylor was badly burned in the accident and succumbed to his injuries four weeks later.

The season saw "the return to power", with the FIA doubling the maximum allowed engine displacement from 1.5 to 3 litres.