P (9 constructors) Nation Begin in Winner World Champion 
PacificUnited Kingdom1994
PankratzUSA1952
ParnelliUSA1974
PawlUSA1951
PenskeUSA1974Winner
PhillipsUSA1954
PolitoysUnited Kingdom1972
PorscheGermany1958Winner
ProstFrance1997





Constructors in activityWorld Champion in activityWorld Champion

Test cars and projects abandoned