The 1966 Mexican Grand Prix was a Formula One motor race held at the Ciudad Deportiva Magdalena Mixhuca on 23 October 1966.

Surtees's victory promoted him to second place in the championship, vaulting past Austrian driver Jochen Rindt of the Cooper works team.

John Surtees dominated to take his first win since transferring from Ferrari to Cooper in mid season.

With Jim Clark suffering gearbox problems and both BRMs retiring, Richie Ginther was the only contender left.

Brabham rallied at the end to close, but Surtees had lapped the entire field up to second.