| terminology | izrazje |
| termite | termit |
| tern | čígra |
| Terpsichore | Terpsihora |
| Terra | Zemlja |
| Terra Nova | Nova Fundlandija |
| Terrane | Teren |
| Terrassa | Terrassa |
| Terrestrial planet | Zemeljski planet |
| terrible | grozen |
| Terriers | Terier |
| terrify | prestrašiti |
| Territoire de Belfort | Territoire de Belfort |
| Territorial defence forces | Teritorialna obramba Republike Slovenije |
| Territorial Defense Forces | Teritorialna obramba Republike Slovenije |
| Territorial Force | Domobranstvo |
| territory | območje |
| Territory of the French Southern and Antarctic Lands | Francoske južne in antarktične dežele |
| terrorism | terorizem |
| terrorist | terorist |
| Tertiary | Terciar |
| tertiary sector | storitveni sektor |
| Tertiary sector of economic activity | Industrija |
| Tertiary sector of industry | Industrija |
| Terton | Terton |
| Tesla | Tesla |
| Tesla Motors | Tesla |
| Tessin | Ticino |
| test | preizkus |
| testament | oporoka |
| testicle | modo |
| testicular | testikuláren |
| Testudines | Želve |
| Testudo formation | Želve |
| Tethys | Tetija |
| Tethys Ocean | Tetis |
| Tetra Pak | Tetrapak |
| Tetraedre | Tetraeder |
| Tetragrammaton | Jahve |
| Tetrahedron | Tetraeder |
| Tetrahydrocannabinol | Tetrahidrokanabinol |
| Tetris | Tetris |
| Teutonic Knights | Križniški red |
| TeX | TeX |
| Texas | Teksas |
| Texas Instruments | Texas Instruments |
| Text corpus | Besedilni korpus |
| Text from the Rosetta Stone | Kamen iz Rosette |
| textbook | učbenik |
| Textile | Snov |
| textile industry | tekstilna industrija |
| textile plant | tekstilna rastlina |
| TFT LCD | LCD |
| TGV | TGV |
| Th | Torij |
| Thabit number | Tabitovo število |
| Thai | tajščina |
| Thai baht | Bat |
| Thai proverbs | Tajski pregovori |
| Thailand | Tajska |
| Thais | Tajda |
| Thalassa | Morje |
| Thales | Tales |
| Thalia | Talija |
