This list of 1951 motorsport champions is a list of national or international auto racing series with a Championship decided by the points or positions earned by a driver from multiple races.

Formula cars

Series	Driver	Season article
World Championship of Drivers	Juan Manuel Fangio	1951 Formula One season
AAA National Championship	Tony Bettenhausen	1951 AAA Championship Car season
British Formula Three Championship	Eric Brandon	1951 British Formula Three Championship
West German Formula Two Championship	Paul Pietsch
West German Formula Three Championship	Walter Komossa	1951 German Formula Three Championship
East German Formula Three Championship	Werner Lehmann

Sports car

Series	Driver	Season article
SCCA National Sports Car Championship	John Fitch	1951 SCCA National Sports Car Championship season

Stock car racing

Series	Driver	Season article
NASCAR Grand National Series	Herb Thomas	1951 NASCAR Grand National Series
Turismo Carretera	Juan Gálvez

Motorcycle

Series	Rider	Season article
500cc World Championship	Geoff Duke	1951 Grand Prix motorcycle racing season
350cc World Championship
250cc World Championship	Bruno Ruffo
125cc World Championship	Carlo Ubbiali
Sidecars World Championship	Eric Oliver Lorenzo Dobelli
Speedway World Championship	Jack Young	1951 Individual Speedway World Championship
AMA Grand National Championship	Bobby Hill

See also

• List of motorsport championships
• Auto racing