Automobilhersteller  O

O´Connell USA 1928
Oakland USA 1907 - 1932
OBC SWE 1969 - 1974
Ockelbo SWE 1957 - 1965
OD GB 1921
Odetti I 1922 - 1925
Offenhauser USA 1934
Ogle GB 1959 - 1963
Ogren USA 1914 - 1922
OHB GB 1903
Ohio USA 1909 - 1915
Ohio Electric USA 1909 - 1915
Oka RUS 1988 - heute
Okey USA 1906 - 1908
Old Mill GB 1914 - 1916
Old Reliable USA 1926
Oldfield USA 1924
Olds USA 1897 - 1908
Oldsmobile USA 1908 - heute
Oliver USA 1935
Olsson SWE 1903
Oltcit ROM 1977 - heute
Olympian USA 1916 - 1920
Olympic USA 1922
O.M. I 1918 - 1933
Omega GB 1925 - 1927
Omega-Six F 1922 - 1930
Omort USA 1927
OMT I 1907 - 1913
Only USA 1910 - 1913
Opel D 1898 - heute
Opes I 1946 - 1948
Opperman GB 1898 - 1907
Opperman GB 1956 - 1959
Orient USA 1900 - 1905
Orient-Express D 1898
Oriole USA 1927
Orion GB 1914
Orleans USA 1920
Orpington GB 1920 - 1924
Orsa SWE 1920
Orson USA 1910 - 1913
Osca I 1947 - 1966
Oshkosh USA 1926
Osi I 1960 - 1970
Osterfield GB 1906 - 1909
Ostermann D
Otomo JAP 1920
Otosan TUR 1959
Otto USA 1900 - 1912
Ottocar USA 1903 - 1904
Overholt USA 1909 - 1910
Overland USA 1903 - 1907
Overland GB 1919 - 1931
Owen GB 1899 - 1932
Owen USA 1909 - 1911
Owen-Magnetic USA 1914 - 1920
Oxford USA 1905 - 1906