| THEIN & GOLDBERGER - REFORM | MOTOCICLETA | I.AUSTRO-HÚNGARO | WIEN - WIEN | 1898 - 1903 |
| THEIS | TRICAR | ALEMANIA III Reich | CHARLOTTENBURG-BERLIN - BERLIN | 1933 |
| THEURER | SIDECAR | ALEMANIA (REP. WEIMAR) | NAGOLD - WÜRTTEMBERG | 1925 |
| THIEM | MOTOCICLETA | USA | ST. PAUL - MINNESOTA | 1900 |
| THOMAS (Barnet) | MOTOCICLETA | REINO UNIDO | Barnet - HERTFORDSHIRE | 1900 |
| THOMAS (Brent) | MOTOCICLETA | REINO UNIDO | BRENT - HERTFORDSHIRE | 1919 |
| THOMAS - AUTO-BI | MOTOCICLETA | USA | BUFFALO - NEW YORK | 1900 |
| THOMPSON (Beverly Farms) | MOTOCICLETA | USA | BEVERLY - MASSACHUSETTS | 1909 |
| THOMPSON (Geraardsbergen) | MOTOCICLETA | BÉLGICA | GERAARDSBERGEN - OOST-VLAANDEREN | 1952 |
| THOR | MOTOCICLETA | USA | AURORA - CHICAGO - ILLINOIS | 1902-1907 |
| THOROUGH | TRICICLO | REINO UNIDO | TOWER HAMLETS - MIDDLESEX | 1903 |
| THOROUGHBRED | MOTOCICLETA | USA | READING (PA) - PENNSYLVANIA | 1904 |
| THREE SPIRES | AUTOCICLO | REINO UNIDO | COVENTRY - WARWICKSHIRE | 1931 |
| THRIF-T | TRICAR | USA | SPRINGFIELD - MASSACHUSETTS | 1947 |
| THULIN | MOTOCICLETA | SUECIA | LANDSKRONA - SKÅNE | 1914 |
| THUMANN | MOTOCICLETA | ALEMANIA (REP. WEIMAR) | HANNOVER - NIEDERSACHSEN | 1925 |
| THUNDER (Reggio nell´Emilia) | MOTOCICLETA | ITALIA | REGGIO NELL´EMILIA - REGGIO NELL´EMILIA | 1952 |
| THUNDERHAWK | TRIKE | USA | TESUQUE - NEW MÉXICO | 1992 |
| THURLOW | TRICAR | REINO UNIDO | LONDON - LONDON COUNTY | 1914-1920 |
| TICKLE | MOTOCICLETA | REINO UNIDO | ST. NEOTS - CAMBRIDGESHIRE | 1969 |