| tribune | podio |
| Tribunus militum | Tribuno militar |
| tribuut | tributo |
| tribuutplichtig | tributario |
| triceps | tríceps |
| Triceratops | Triceratops |
| Trichlooretheen | Tricloroetileno |
| Tricholomataceae | Tricholomataceae |
| Trichomonas vaginalis | Trichomonas vaginalis |
| Trichomoniasis | Tricomoniasis |
| trichotillomanie | tricotilomanía |
| Tricky | Tricky |
| Triconodonta | Triconodonta |
| tricot | tejido de punto |
| tricot-weefsel | jersey |
| Tridentijnse ritus | Misa tridentina |
| Trient | Trient |
| Trier | Tréveris |
| Triesen | Triesen |
| Triesenberg | Triesenberg |
| triest | oscuro |
| Trifidnevel | Nebulosa Trífida |
| Triflaat | Triflato |
| Triforce | Trifuerza |
| Trigeminusneuralgie | Neuralgia del trigémino |
| Trigger | Trigger |
| Triglav | Triglav |
| trigonometrie | trigonometría |
| Trigonosaurus | Trigonosaurus |
| Trijodothyronine | Tiroxina |
| Trikala | Trikala |
| triktrak | juego de chaquete |
| Trilaterale commissie | Comisión Trilateral |
| trilhaardiertje | ciliado |
| triljard | mil trillones |
| triljoen | trillón |
| trillen | tiritar |
| trillend | tembloroso |
| triller | trino |
| trillerig | tembloroso |
| trilling | temblor |
| Trillingsanalyse | Densidad espectral |
| Trilobieten | Trilobita |
| trilogie | trilogía |
| Trilzwammen | Tremellales |
| trimaran | trimarán |
| trimester | semestre |
| Trimix | Trimix |
| trimmen | hacer jogging |
| Trimmis | Trimmis |
| Trimstein | Trimstein |
| Trin | Trin |
| Trinacria | Trinacria |
| Trinacrie | Trinacria |
| Tringa | Tringa |
| Trinidad | Isla Trinidad |
| Trinidad en Tobago | Trinidad y Tobago |
| Trinidad en Tobago dollar | Dólar trinitense |
| Trinitariërs | Orden Trinitaria |
| Trinitatis | Trinidad |
| Trinity | Prueba Trinity |
| Trinity College | Trinity College |
| Trinity County | Prueba Trinity |
| Trinità dei Monti | Trinità dei Monti |
| Trinley Gyatso | Trinlé Gyatso |
| Trinley Thaye Dorje | Thaye Dorje |
| trio | triunvirato |
| Triode | Triodo |
| Trioemf-Palas | Palacio del Triunfo |
| triomf | éxito |
| triomf- | triunfal |
| triomfant | triunfante |
| triomfboog | arco de triunfo |
| triomferen | triunfar |
| triomflied | peán |
