| triángulo | triangel |
| Triángulo de las Bermudas | Bermudatriangeln |
| Triángulo de Pascal | Pascals triangel |
| Triángulo de Sierpinski | Sierpinskitriangel |
| Triángulo de verano | Sommartriangeln |
| triángulo rectángulo | rät triangel |
| Triásico | Trias |
| trocar | idka byteshandel |
| Trocha angosta | Smalspår |
| Trochilidae | Kolibrier |
| Trochilinae | Kolibrier |
| Trofeo Art Ross | Art Ross Memorial Trophy |
| Trofeo Bill Masterton | Bill Masterton Memorial Trophy |
| Trofeo Calder | Calder Memorial Trophy |
| Trofeo Conn Smythe | Conn Smythe Trophy |
| Trofeo de la Copa del Mundo | VM i fotboll |
| Trofeo Hart | Hart Memorial Trophy |
| Trofeo Jack Adams | Jack Adams Award |
| Trofeo James Norris | James Norris Memorial Trophy |
| Trofeo Joan Gamper | Joan Gamper-pokalen |
| Trofeo King Clancy | King Clancy Memorial Trophy |
| Trofeo Lady Byng | Lady Byng Memorial Trophy |
| Trofeo Lester Patrick | Lester Patrick Trophy |
| Trofeo Príncipe de Gales | Prince of Wales Trophy |
| Trofeo Roger Crozier | Roger Crozier Saving Grace Award |
| Trofim Denisovich Lysenko | Trofim Lysenko |
| Trogir | Trogir |
| Troglodytidae | Gärdsmygar |
| Troinex | Troinex |
| Trois-Rivières | Trois-Rivières |
| Troistorrents | Troistorrents |
| trol | troll |
| trolear | trolla |
| trolebús | trådbuss |
| Troll | Internettroll |
| Trolltech | Trolltech |
| Troma Entertainment | Troma entertainment |
| tromba marina | skydrag |
| Trombocitopenia | Trombocytopeni |
| Tromboflebitis superficial | Tromboflebit |
| trombón | trombon |
| trompa | horn |
| trompa de Eustaquio | eustachiskt rör |
| trompa de Falopio | äggledare |
| trompa de los Alpes | alphorn |
| Trompa de mano | Horn |
| trompeta | trumpet |
| trompetear | trumpeta |
| trompetero | trumpetare |
| trompetista | trumpetare |
