Protos, Berlino, Germania, 1898-1926
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
PLYMOUTH, Detroit, USA, 1928-
PIERCE-ARROW, Buffalo, USA, 1901-1931
PEERLESS, Cleveland, USA, 1900-1931