| Marca | Modelo | País | Localización | Año |
|---|---|---|---|---|
| GROSSKREUTZ | BASTIDOR | AUSTRALIA | PROSERPINE - QUEENSLAND | 1934 |
| GROWDEN | MOTOCICLETA | AUSTRALIA | - | 1904 |
| GRUHN (Berlin) | MOTOCICLETA | ALEMANIA (REP. WEIMAR) | BERLIN - BERLIN | 1920 |
| GRUHN (Steglitz) | MOTOCICLETA | ALEMANIA IMPERIAL | STEGLITZ - BRANDENBURG | 1906 |
| GRUNO | TRICICLO | PAISES BAJOS | WINSCHOTEN - GRONINGEN | 1897 |
| GRUTZENA | MOTOCICLETA | ALEMANIA (REP. WEIMAR) | BELZIG - BRANDENBURG | 1925 |
| GRYCNER | CICLOMOTOR | USA | PALM SPRINGS - CALIFORNIA | 1979 |
| GS (Burg bei Magdeburg) | MOTOR AUXILIAR | ALEMANIA (REP. WEIMAR) | BURG bei MAGDEBURG - SACHSEN-ANHALT | 1920 |
| GS - GIOIELLO | MOTOR | ITALIA | MILANO - MILANO | 1950 |
| GS, SCHROFF-RECORD | MOTOCICLETA | ALEMANIA (REP. WEIMAR) | BERLIN - BERLIN | 1923 |
| GSC | ESCÚTER | REINO UNIDO | KENILWORTH - WARWICKSHIRE | 1920 |
| GSD | MOTOCICLETA | REINO UNIDO | COVENTRY - WARWICKSHIRE | 1921 |
| GUARALDI | MOTOCICLETA | ITALIA | LODI - LODI | 1905 |
| GUARASCHI | MOTOCICLETA | ITALIA | CREMONA - CREMONA | 1951 |
| GUARD (AUS) | MOTOCICLETA | AUSTRALIA | ADELAIDE - SOUTH AUSTRALIA | 1904 - 196 |
| GUAZZONI | MOTOCICLETA | ITALIA | MILANO - MILANO | 1935 -b 1949 |
| GUBERN | MOTOCICLETA | ESPAÑA | BARCELONA - BARCELONA | 1955 |
| GUDJAR | MOTOR | HUNGRÍA | BUDAPEST - BUDAPEST | 1923 |
| GUERRERO | MOTOCICLETA | ARGENTINA | SAN LORENZO - SANTA FE | 1978-1993 |
| GUERRY | MOTOCICLETA | FRANCIA | PARIS - SEINE | 1902 |