| CLINTON (Maquoketa) | MOTOR | USA | MAQUOKETA - IOWA | 1946 |
| CLIPIC | MOTOCICLETA | ESPAÑA | OLOT - GIRONA | 1992 - 1995 |
| CLIPPER (GB) | ESCÚTER | REINO UNIDO | - | 1948 |
| CLIPPER (Lons-le-Saunier) | CICLOMOTOR | FRANCIA | LONS-le-SAUNIER - JURA | 1950 |
| CLIPPER (Newcastle (NSW)) | MOTOCICLETA | AUSTRALIA | NEW HAMBURG (Wilmot Township) - NEW SOUTH WALES | 1913 |
| CLOUMOBIL | TRICICLO | ALEMANIA IMPERIAL | CHARLOTTENBURG - BRANDENBURG | 1906 |
| CLÚA | MOTOCICLETA | ESPAÑA | BARCELONA - BARCELONA | 1924 - 1949 |
| CLUPPER | MOTOCICLETA | USA | - | 1980 |
| CLYDE (Leicester) | TRICICLO | REINO UNIDO | LEICESTER - LEICESTERSHIRE | 1890-1902 |
| CLYNO | MOTOCICLETA | REINO UNIDO | WOLVERHAMPTON - STAFFORDSHIRE | 1909 |
| CM (Bologna) | MOTOCICLETA | ITALIA | BOLOGNA - BOLOGNA | 1930 |
| CM (München) | MOTOCICLETA | ALEMANIA (REP. WEIMAR) | MÜNCHEN - BAYERN | 1921 |
| CMB | ESCÚTER | BÉLGICA | BRUSSELS - BRUSSELS | 1920 |
| CMC (Barcelona) | MOTOR | ESPAÑA | BARCELONA - BARCELONA | 1949 |
| CMC (Montrouge) | BICIMOTOR | FRANCIA | MONTROUGE - SEINE | 1950 |
| CMC (Tarporley) | BICIMOTOR | REINO UNIDO | TARPORLEY-CHESTER - CHESHIRE | 1909 |
| CMK | CICLOMOTOR | ITALIA | RIVOLTELLA del GARDA - BRESCIA | 1966 |
| CMM (Coventry) | MOTOCICLETA | REINO UNIDO | COVENTRY - WARWICKSHIRE | 1918 |
| CMM (Lyon) | MOTOCICLETA | FRANCIA | LYON - RHÔNE | 1927 |
| CMP | MOTOCICLETA | ITALIA | PADOVA - PADOVA | 1953 |