| Theodor Billroth | Theodor Billroth |
| Theodor Dannecker | Theodor Dannecker |
| Theodor de Bry | Théodore de Bry |
| Theodor Eimer | Theodor Eimer |
| Theodor Fontane | Theodor Fontane |
| Theodor Herzl | Theodor Herzl |
| Theodor Heuss | Theodor Heuss |
| Theodor Mommsen | Theodor Mommsen |
| Theodor Rosetti | Theodor Rosetti |
| Theodor Schwann | Theodor Schwann |
| Theodor Storm | Theodor Storm |
| Theodor Svedberg | Theodor Svedberg |
| Theodora | Teodora |
| Theodora Angelina | Teodora Angelina |
| Theodora Komnene | Teodora Komnena |
| Theodora of Trebizond | Teodora Komnena |
| Theodore | Teodor |
| Theodore Barrière | Théodore Barrière |
| Theodore Beza | Teodor de Bèze |
| Theodore Dreiser | Theodore Dreiser |
| Theodore Edgar McCarrick | Theodore Edgar McCarrick |
| Theodore Harold Maiman | Theodore Maiman |
| Theodore I Laskaris | Teodor I Laskarys |
| Theodore II | Antypapież Teodor |
| Theodore II Laskaris | Teodor II Laskarys |
| Theodore Kaczynski | Theodore Kaczynski |
| Theodore of Mopsuestia | Teodor z Mopsuestii |
| Theodore of Tarsus | Teodor z Tarsu |
| Theodore Racing | Teodor |
| Theodore Roosevelt | Theodore Roosevelt |
| Theodore Schultz | Theodore Schultz |
| Theodore Sturgeon | Theodore Sturgeon |
| Theodore T-Bag Bagwell | Theodore T-Bag Bagwell |
| Theodore von Kármán | Theodore von Kármán |
| Theodore William Richards | Theodore William Richards |
| Theodoret | Teodoret z Cyru |
| Theodoric | Teodoryk |
| Theodoric I | Teoderyk I |
| Theodoric II | Teodoryk Wielki |
| Theodoric the Great | Teodoryk Wielki |
| Theodoros Papaloukas | Theodoros Papalukas |
| Theodoros Zagorakis | Theodoros Zagorakis |
| Theodorus of Cyrene | Teodor z Cyreny |
| Theodosia | Teodozja |
| Theodosios III | Teodozjusz III |
| Theodosius | Teodozjusz |
| Theodosius Dobzhansky | Theodosius Dobzhansky |
| Theodosius I | Teodozjusz I Wielki |
| Theodosius II | Teodozjusz II |
| Theodrada | Teodrada |
| Theofanis Gekas | Theofanis Gekas |
| Theognis | Teognis z Megary |
| Theognis of Megara | Teognis z Megary |
| Theognostus | Teognost |
| theologian | teolog |
| theological | teologiczny |
| Theological anthropology | Antropologia religii |
| theology | teologia |
| Theon of Alexandria | Teon z Aleksandrii |
| theopanism | teopanizm |
| Theophanes the Confessor | Teofan Wyznawca |
| Theophanes the Greek | Teofan Grek |
| Theophanu | Teofano |
| theophany | teofania |
| theophilia | teofilia |
| Theophilos | Teofil |
| Theophilus | Teofil |
| Theophilus of Antioch | Teofil |
| Theophrastus | Teofrast |
| Theora | Theora |
| theorem | twierdzenie |
| Theorem of Pythagoras | Twierdzenie Pitagorasa |
| theoretic | akademicki |
| theoretical | akademicki |
| Theoretical chemistry | Chemia teoretyczna |
| Theoretical computer science | Teoria obliczeń |
| Theoricon | Terikon |
| Theorie | Teoria |
| theorist | teoretyk |
| theory | teoria |
| Theory of cognition | Epistemologia |
| Theory of cognitive development | Jeana Piageta koncepcja rozwoju intelektualnego |
| Theory of computation | Teoria obliczeń |
| Theory of literature | Teoria |
| Theory of music | Teoria muzyki |
| Theory of relativity | Teoria względności |
| Theory of special relativity | Szczególna teoria względności |
| Theosophical Society | Towarzystwo Teozoficzne |
| theosophy | teozofia |
| Theotokos | Theotokos |
| Therapeutic horseback riding | Hipoterapia |
| therapist | terapeuta |
| Therapsida | Terapsydy |
| therapy | leczenie |
| Therapy dog | Kynoterapia |
| Theravada | Theravada |
| there | tam |
| there are plenty of fish in the sea | tego kwiatu jest pół światu |
| there is | są |
| there is news | słychać |
| there is no knowing | wiadomo |
| there is no saying | wiadomo |
| There Is Nothing Left to Lose | There Is Nothing Left to Lose |
| there is talk | słychać |
| there's no accounting for taste | o gustach się nie dyskutuje |
| there's no place like home | wszędzie dobrze, ale w domu najlepiej |
| thereafter | odtąd |
| therefore | dlatego |
| therein | w tym |
| Theres | Theres |
| Theresa Kunegunda Sobieska | Teresa Kunegunda Sobieska |
| Therese Borssén | Therese Borssén |
| Therese Neumann | Teresa Neumann |
| Therese of Saxe-Hildburghausen | Teresa Sachsen-Hildburghausen |
| Theresienstadt concentration camp | Theresienstadt |
| Therevidae | Lowikowate |
| Theria | Ssaki żyworodne |
| Theriodont | Teriodonty |
| Theriodontia | Teriodonty |
| Therizinosaurus | Terizinozaur |
| Thermal baths | Termy |
| Thermal camera | Aparat fotograficzny |
| Thermal element | Termopara |
| Thermal equator | Równik termiczny |
| thermal equipment | instalacja cieplna |
| thermal power plant | elektrownia cieplna |
| Thermal transfer | Wymiana cieplna |
| Thermal treatment | Obróbka termiczna |
| Thermal value | Ciepło spalania |
| Thermal wind | Wiatr termiczny |
| Thermaltake | Thermaltake |
| Thermidor | Thermidor |
| thermistor | termistor |
| thermite | termit |
| Thermo-couple | Termopara |
| Thermo-hygrograph | Higrograf |
| Thermo-luminescence | Metoda termoluminescencyjna |
| Thermobaric weapon | Bomba paliwowo-powietrzna |
| thermodynamic | termodynamiczny |
| Thermodynamic cycle | Obieg termodynamiczny |
| Thermodynamic diagrams | Diagram termodynamiczny |
| Thermodynamic free energy | Energia swobodna |
| Thermodynamic process | Proces termodynamiczny |
| Thermodynamic system | Układ termodynamiczny |
| thermodynamics | termodynamika |
| Thermogenin | Termogenina |
| Thermographic camera | Termowizor |
| Thermohaline circulation | Cyrkulacja termohalinowa |
| Thermoluminescence dating | Metoda termoluminescencyjna |
| thermometer | termometr |
| Thermopylae | Termopile |
| Thermopyles | Termopile |
| thermos | termos |
| Thermosetting plastic | Duromer |
| thermosphere | termosfera |
| thermostat | termostat |
| Theropoda | Teropody |
| Thersites | Tersytes |
| thesaurus | tezaurus |
| Thescelosaurus | Teskelozaur |
| Theses on Feuerbach | Tezy o Feuerbachu |
| Theseus | Tezeusz |
| thesis | teza |
| Thesmophoria | Tesmoforie |
| Thespis | Tespis |
| Thessalia | Tesalia |
| Thessalonica of Macedon | Tessalonika |
| Thessaloniki | Saloniki |
| Thessaloniki Prefecture | Saloniki |
| Thessaly | Tesalia |
| Thestral | Testral |
| Theta | Theta |
| Theta Centauri | Menkent |
| Theta Scorpii | Sargas |
| Thetis | Tetyda |
| Theudebald | Teudoald |
| Theuderic I | Teoderyk I |
| Theuderic IV | Teuderyk IV |
| Theudoald | Teudoald |
| they | one |
| They Came to Baghdad | Spotkanie w Bagdadzie |
| They Came to Bahgdad | Spotkanie w Bagdadzie |
| They Do It with Mirrors | Strzały w Stonygates |
| They Live | Oni żyją |
| They shall not pass | Nie przejdą |
| Thiago Motta | Thiago Motta |
| thiamin | tiamina |
| thiamine | tiamina |
| Thibet | Tybet |
| Thich Quang Duc | Thích Quảng Ðức |
| thick | gruby |
| thick as a brick | głupi jak but |
| Thick description | Gęsty opis |
| Thick piece of steak | Klinkier |
| thick-knee | kulon |
| thicket | gęstwina |
| thickness | miąższość |
| thief | złodziej |
| Thief of Time | Złodziej czasu |
| Thierhaupten | Thierhaupten |
| Thierrens | Thierrens |
| Thierry | Teodoryk |
| Thierry Henry | Thierry Henry |
| Thierry La Fronde | Thierry Śmiałek |
| Thiers | Thiers |
