| CLAMIL | MOTOCICLETA | REINO UNIDO | - | 1922 |
| CLARENDON | MOTOCICLETA | REINO UNIDO | LEAMINGTON SPA - WARWICKSHIRE | 1901 |
| CLARK SCAMP | MOTOR AUXILIAR | REINO UNIDO | BINSTEAD - ISLE of WIGHT | 1967 |
| CLARKE (Pittsburgh) | TRICICLO | USA | PITTSBURGH - PENNSYLVANIA | 1897 |
| CLARUS | CICLOMOTOR | FRANCIA | LONS-le-SAUNIER - JURA | 1950 |
| CLASSIC (Jinhua) | MOTOCICLETA | CHINA | JINHUA - ZHEJIANG | 2002 |
| CLAUDE DELAGE | MOTOCICLETA | FRANCIA | CLICHY - SEINE | 1923 |
| CLB | BASTIDOR | FRANCIA | SAINT-ÉTIENNE - LOIRE | 1951 |
| CLEBANT | TRICAR | FRANCIA | - | 19?? |
| CLEMENT (London) | MOTOR | REINO UNIDO | LONDON - LONDON | 1922 |
| CLEMENT-GARRARD | MOTOCICLETA | REINO UNIDO | BIRMINGHAM - WARWICKSHIRE | 1902 |
| CLÉMENT-GLADIATOR | MOTOCICLETA | FRANCIA | LEVALLOIS-PERRET - LE PREÉ-SAINT-GERVAIS - SEINE | 1896 |
| CLERI | MOTOCICLETA | ARGENTINA | SAN FRANCISCO (RA) - CÓRDOBA (RA) | 1959 |
| CLEVELAND (Cleveland) | MOTOCICLETA | USA | HARTFORD - CLEVELAND - CONNECTICUT - OHIO | 1902 |
| CLEVELAND (Middlesborough) | MOTOCICLETA | REINO UNIDO | MIDDLESBROUGH - YORKSHIRE | 1911 |
| CLEVER | TRICAR | REINO UNIDO | BATH - SOMERSET | 2002 |
| CLEWSTROKA | MOTOCICLETA | REINO UNIDO | BOLTON - LANCASHIRE | 1971 |
| CLIFTON & DE GUERIN | MOTOCICLETA | REINO UNIDO | BATH - SOMERSET | 1929 |
| CLIFTON (Adelaide) | MOTOCICLETA | AUSTRALIA | ADELAIDE - SOUTH AUSTRALIA | 1916 |
| CLIMAX | MOTOR | REINO UNIDO | COVENTRY - WARWICKSHIRE | 1931? |