| TRI MOTO (Chicago) | TRICICLO | USA | CHICAGO - ILLINOIS | 1900 |
| TRI POD | TRICAR | AUSTRALIA | SUNSHINE COAST - QUEENSLAND | 2006-2010 |
| TRI SPORT | TRICAR | REINO UNIDO | BOLTON - LANCASHIRE | 1990 |
| TRI-CAR (Wheatland) | TRICAR | USA | WILLIAMSPORT - PENNSYLVANIA | 1955 |
| TRI-TECH | TRICAR | REINO UNIDO | PRESTON - LANCASHIRE | 1990 |
| TRIAD | TRICAR | REINO UNIDO | KIDLINGTON - OXFORDSHIRE | 1992 |
| TRIANON | MOTOCICLETA | ALEMANIA (REP. WEIMAR) | HERFORD - NORDRHEIN-WESTFALEN | 1922 |
| TRIBELHORN | TRICAR | SUIZA | FELDBACH - ALTSTETTEN - ST. GALLEN - ZÜRICH | 1902-1922 |
| TRIBSA | MOTOCICLETA | REINO UNIDO | MERIDEN-SOLIHULL - WARWICKSHIRE | 1960,s - 1970,s |
| TRIBUNE | MOTOCICLETA | USA | HARTFORD - CONNECTICUT | 1903 |
| TRICARS (Pečky) | TRICAR | REP.CHECA | PEČKY - STŘEDOČESKÝ KRAJ | 2003 |
| TRICE | TRICICLO | REINO UNIDO | - CORNWALL | 1992 |
| TRICOLET | TRICICLO | USA | INDIANAPOLIS - INDIANA | 1904 |
| TRIDENT | TRICAR | REINO UNIDO | LONDON - LONDON COUNTY | 1919 |
| TRIFIELD | MOTOCICLETA | REINO UNIDO | - | 1963 |
| TRIGGER | TRICAR | PAISES BAJOS | DEN HAAG - HONG KONG - ZUID-HOLLAND - HONG KONG | 1987 |
| TRIHAWK | TRICAR | USA | MOKENA - DANA POINT - ILLINOIS - CALIFORNIA | 1983 |
| TRIKING | TRICAR | REINO UNIDO | MARLINGFORD-NORWICH - HINGHAM - NORFOLK | 1978 |
| TRILBY | MOTOCICLETA | FRANCIA | PARIS - SEINE | 1904 |
| TRILUX | TRICAR | REINO UNIDO | - | 1986 |