| tumescent | tumescente |
| tumeur | excrecencia |
| Tumeur de Wilms | Tumor de Wilms |
| Tumeur maligne | Carbunco |
| Tumor necrosis factor | Factor de necrosis tumoral |
| tumulte | alboroto |
| tumultueux | agitado |
| tumulus | túmulo |
| tumulus de pierres | mojón |
| Tunceli | Provincia de Tunceli |
| tuner | sintonizador |
| Tunesie | Túnez |
| Tung Chee-Hwa | Tung Chee-hwa |
| Tunga penetrans | Tunga penetrans |
| Tungabhadrâ | Tungabhadra |
| Tungose | Tungiasis |
| tungstène | volframio |
| Tungurahua | Tungurahua |
| Tuning PC | Hardmodding |
| tunique | túnica |
| Tuniqué | Urochordata |
| Tunis | Túnez |
| Tunisie | Túnez |
| tunisien | tunecino |
| Tunisienne | tunecino |
| Tunja | Tunja |
| Tunku Abdul Rahman | Abd ul-Rahman Putra |
| tunnel | túnel |
| tunnel aérodynamique | túnel aerodinámico |
| Tunnel de base du Saint-Gothard | Túnel de base San Gotardo |
| Tunnel de Gibraltar | Túnel de Gibraltar |
| Tunnel de lave | Tubo de lava |
| Tunnel de Lærdal | Túnel de Lærdal |
| Tunnel du Mont-Blanc | Túnel de Mont Blanc |
| Tunnel du Saint-Gothard | Túnel de base San Gotardo |
| Tunnel du Seikan | Túnel Seikan |
| Tunnel ferroviaire du Saint-Gothard | Túnel ferroviario San Gotardo |
| Tunnel Lefortovo | Túnel de Lefortovo |
| Tunnel routier du Saint-Gothard | Túnel carretero San Gotardo |
| Tunnel sous la Manche | Eurotúnel |
| Tunturi | Montaña |
| Tunuyán | Tunuyán |
| Tuomas Holopainen | Tuomas Holopainen |
| Tupac Amaru | Túpac Amaru I |
| Tupac Shakur | Tupac Shakur |
| Tupac Yupanqui | Túpac Yupanqui |
| Tupai | Tupai |
| Tupaia | Scandentia |
| Tupamaros | Movimiento de Liberación Nacional-Tupamaros |
| Tupinambis | Tupinambis |
| Tupinambis teguixin | Tupinambis merianae |
| Tupolev | Tupolev |
| Tupungatito | Tupungatito |
| Tupungato | Tupungato |
| tuque | gorro |
| Turandot | Turandot |
| Turanga Leela | Turanga Leela |
| turban | turbante |
| Turbellariés | Planaria |
| turbidité | turbiedad |
| turbine | turbina |
| Turbine Francis | Turbina Francis |
| Turbine Kaplan | Turbina Kaplan |
| Turbine Pelton | Turbina Pelton |
| Turbine à gaz | Turbina de gas |
| Turbine à vapeur | Turbina a vapor |
