Puch, Graz, Austria, 1906-1923
PUZYREV, St. Petersburg, Russia, 1911-1914
Protos, Berlino, Germania, 1898-1926
PROTON, Shah Alam, Malaysia, 1983-
PROMBRON, Moscow, USSR, 1922-1926
PRINCE, Turin, Italy, 1921-1923
PRINETTI & STUCCHI, Milan, Italy, 1898-1902
PRESTO, Chemnitz, Germany, 1907-1927
PRAGA, Prague, Austria-Hungary / Czechoslovakia, 1907-1947
PORSCHE, Gmünd, Austria/Stuttgart-Zuffenhausen, Germany, 1948-
PONTIAC, Pontiac, USA, 1926-
PLYMOUTH, Detroit, USA, 1928-
AAR-All American Racers
A.M. Turin, Italy, 1920-1924
A.G. ALFIERI Tipo-1 Sport
A.A.A. (Aktiengesellschaft fur Akkumulatoren und Automobilbau)
PIERCE-ARROW, Buffalo, USA, 1901-1931
PEERLESS, Cleveland, USA, 1900-1931
A.G. ALFIERI, Milan, Italy, 1925-1927
PILAIN, Lyon, France, 1894-1898,1902-1920
PIC-PIC, Geneva, Switzerland, 1905-1924
PENNACCHIO, Milan, Italy, 1947-1948
PAIGE / PAIGE-DETROIT, Detroit, USA, 1908-1927
PEUGEOT, Beaulieu/Haudincourt/Sochaux, France, 1889-
PEUGEOT-CROIZAT, Turin, Italy, 1905-1907