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.
Motorcycle racing Series Rider Season article 500cc World Championship Geoff Duke 1951 Grand Prix motorcycle racing season Manufacturers: Norton 350cc World Championship Geoff Duke 250cc World Championship Bruno Ruffo 125cc World Championship Carlo Ubbiali Manufacturers: Mondial Sidecars World Championship Eric Oliver Lorenzo Dobelli Speedway World Championship Jack Young 1951 Individual Speedway World Championship AMA Grand National Championship Bobby Hill
Open wheel racing 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 West German Formula Two Championship Paul Pietsch Formula Three British Formula Three Championship Eric Brandon 1951 British Formula Three Championship East German Formula Three Championship Werner Lehmann 1951 East German Formula Three Championship West German Formula Three Championship Walter Komossa 1951 West German Formula Three Championship
Sports car and GT 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 AAA Stock Car National Championship Rodger Ward 1951 AAA Stock Car National Championship Turismo Carretera Juan Gálvez
See also List of motorsport championships Auto racing