| theoretisch | abstrakt |
| Theoretische chemie | Theoretische Chemie |
| Theoretische informatica | Theoretische Informatik |
| theoretische taalkunde | Theoretische Linguistik |
| theoretiseren | theoretisieren |
| theorie | Theorie |
| theorie der vergelijkingen | Gleichungstheorie |
| Theorie van alles | Einheitliche Feldtheorie |
| Theorie van warmtevloeistof | Kalorische Theorie |
| Theory of constraints | Theorie der Einschränkungen |
| theosofie | Theosophie |
| theosofisch | theosophisch |
| Theosofische Vereniging | Theosophische Gesellschaft |
| Theotokos | Gottesgebärerin |
| Thera | Santorini |
| Theramenes | Theramenes |
| therapeut | Therapeut |
| therapeute | Therapeutin |
| therapeutiek | Heilverfahren |
| therapeutisch | therapeutisch |
| Therapeutische breedte | Therapeutische Breite |
| therapie | Therapie |
| Therapsida | Therapsiden |
| Theravada | Theravada |
| There Is Nothing Left To Lose | There Is Nothing Left to Lose |
| Theremin | Theremin |
| Theres | Theres |
| Therese Neumann | Therese Neumann |
| Theresia Kunigunde Sobieska | Therese Kunigunde von Polen |
| Theresia van Avila | Teresa von Ávila |
| Theresia van Bourbon-Sicilië | Teresa Maria Cristina von Neapel-Sizilien |
| Theresia van Lisieux | Therese von Lisieux |
| Theresia van Oostenrijk | Maria Theresia Isabella von Österreich |
| Theresia van Saksen-Hildburghausen | Therese von Sachsen-Hildburghausen |
| Theresienfeld | Theresienfeld |
| Theresienstadt | Terezín |
| Theriiformes | Theria |
| Therizinosauria | Therizinosauria |
| Therizinosaurus | Therizinosaurus |
| Thermal Design Power | Thermal Design Power |
| Thermalbad Wiesenbad | Thermalbad Wiesenbad |
| Thermen | Römische Thermen |
| Thermen van Caracalla | Caracalla-Thermen |
| Thermen van Diocletianus | Diokletiansthermen |
| Thermidor | Thermidor |
| Thermiek | Thermik |
| Thermietlassen | Aluminothermie |
| Thermionische emissie | Edison-Richardson-Effekt |
| thermisch | Thermal- |
| Thermisch papier | Thermopapier |
| Thermisch-elektrische zonne-energie | Sonnenwärmekraftwerk |
| Thermische analyse | Differential-Thermoanalyse |
| Thermische geleidbaarheid | Wärmeleitfähigkeit |
| Thermische lans | Sauerstofflanze |
| Thermische overdrachtsprinter | Thermotransferdruck |
| Thermische ruis | Johnson-Rauschen |
| Thermische weerstand | Wärmewiderstand |
| Thermobarisch wapen | Aerosolbombe |
| Thermocline | Metalimnion |
| thermodynamica | Thermodynamik |
| thermofiel | thermophil |
| Thermografie | Thermografie |
| Thermogravimetrische analyse | Thermogravimetrische Analyse |
| Thermohaliene circulatie | Globales Förderband |
| thermohardend | duroplastisch |
| Thermoharder | Duroplast |
| Thermokoppel | Thermoelement |
| Thermoluminescentie | Thermolumineszenz |
| Thermolyse | Thermolyse |
| thermometer | Thermometer |
| Thermometervogel | Thermometerhuhn |
| thermonucleair | thermonuklear |
| Thermopauze | Thermopause |
| thermoplastisch | thermoplastisch |
| Thermopolis | Thermopolis |
| Thermopylae | Thermopylen |
| Thermoregulatie | Thermoregulation |
| thermosfeer | Thermosphäre |
| thermosfles | Thermosflasche |
| thermoskan | Thermosflasche |
| thermostaat | Thermostat |
| Theron van Akragas | Theron von Akragas |
| Theropoda | Theropoda |
| Thersites | Thersites |
| Therwil | Therwil |
| thesaurie | Quästur |
| thesaurier | Rechnungsprüfer |
| thesaurus | Thesaurus |
| these | These |
| Thesenvitz | Thesenvitz |
| Theseus | Theseus |
| thesis | Diplomarbeit |
| Thesmophoria | Thesmophorien |
| Thespiae | Thespiai |
| Thesprotia | Thesprotia |
| Thessalië | Thessalien |
| Thessaloniki | Thessaloniki |
| Thetis | Thetis |
| Theudis | Theudis |
| Theudoald | Theudoald |
| Theuma | Theuma |
| theïsme | Theismus |
| Theïst | Theist |
| Theïstisch evolutionisme | Theistische Evolution |
| Thiago Motta | Thiago Motta |
| Thiamine | Thiamin |
| Thich Nhat Hanh | Thích Nhất Hạnh |
| Thick As A Brick | Thick As a Brick |
| Thief | Der Einzelgänger |
| Thielbeer | Thielbeer |
| Thiendorf | Thiendorf |
| Thierachern | Thierachern |
| Thierhaupten | Thierhaupten |
| Thierrens | Thierrens VD |
| Thierry Boutsen | Thierry Boutsen |
| Thierry Henry | Thierry Henry |
| Thierry la Fronde | Thierry la Fronde |
| Thiers | Thiers |
| Thierschneck | Thierschneck |
| Thiersheim | Thiersheim |
| Thierstein | Thierstein |
| Thiessow | Thiessow |
| Thieu Tri | Thiệu Trị |
| Thießen | Thießen |
| thijm | Thymian |
| Thijs | Matthias |
| Thimerosal | Thimerosal |
| Thimestus | Timesitheus |
| Thimphu | Thimphu |
| Thin client | Thin Client |
| Thin Film Transistor | Dünnschichttransistor |
| Thin Lizzy | Thin Lizzy |
| thinner | Lösungsmittel |
| Thiofeen | Thiophen |
| Thioglycolzuur | Mercaptoessigsäure |
| Thiol | Alkanthiole |
| Thionylchloride | Thionylchlorid |
| Thirasia | Thirasia |
| Third Lanark AC | Third Lanark |
| Third person shooter | Third-Person-Shooter |
| Thirteen | Dreizehn |
| Thirteen Senses | Thirteen Senses |
| This Woman Is Dangerous | Vergebung |
| Thiudimir | Thiudimir |
| Thixotropie | Thixotropie |
| Thjazi | Thiazi |
| Tholey | Tholey |
| Tholos | Tholos |
| Thom Yorke | Thom Yorke |
| Thomas | Thomas |
| Thomas a Kempis | Thomas von Kempen |
| Thomas Abbt | Thomas Abbt |
| Thomas Arne | Thomas Arne |
| Thomas Bayes | Thomas Bayes |
| Thomas Becket | Thomas Becket |
| Thomas Beecham | Thomas Beecham |
| Thomas Bernhard | Thomas Bernhard |
| Thomas Boleyn | Thomas Boleyn |
| Thomas Browne | Thomas Browne |
| Thomas Burke | Thomas Burke |
| Thomas Cajetanus | Thomas Cajetan |
| Thomas Carlyle | Thomas Carlyle |
| Thomas County | Thomas County |
| Thomas Cranmer | Thomas Cranmer |
| Thomas Cromwell | Thomas Cromwell |
| Thomas Dekker | Thomas Decker |
| Thomas Doll | Thomas Doll |
| Thomas Edison | Thomas Alva Edison |
| Thomas Edward Lawrence | Thomas Edward Lawrence |
| Thomas Erpenius | Thomas Erpenius |
| Thomas Forstner | Thomas Forstner |
| Thomas Gainsborough | Thomas Gainsborough |
| Thomas Gray | Thomas Gray |
| Thomas Hardy | Thomas Hardy |
| Thomas Harris | Thomas Harris |
| Thomas Hitzlsperger | Thomas Hitzlsperger |
| Thomas Hobbes | Thomas Hobbes |
| Thomas Hunt Morgan | Thomas Hunt Morgan |
| Thomas Huxley | Thomas Henry Huxley |
| Thomas Häßler | Thomas Häßler |
| Thomas Jefferson | Thomas Jefferson |
| Thomas Joannes Stieltjes Jr | Thomas Jean Stieltjes |
| Thomas Klestil | Thomas Klestil |
| Thomas Kuhn | Thomas Samuel Kuhn |
| Thomas Lowry | Thomas Lowry |
| Thomas Malory | Thomas Malory |
| Thomas Malthus | Thomas Robert Malthus |
| Thomas Mann | Thomas Mann |
| Thomas Marshall | Thomas Riley Marshall |
| Thomas Merton | Thomas Merton |
| Thomas Midgley | Thomas Midgley |
| Thomas More | Thomas Morus |
| Thomas Muster | Thomas Muster |
| Thomas Müntzer | Thomas Müntzer |
| Thomas Nagel | Thomas Nagel |
| Thomas Paine | Thomas Paine |
| Thomas Pynchon | Thomas Pynchon |
| Thomas Raffles | Thomas Stamford Raffles |
| Thomas Ravelli | Thomas Ravelli |
| Thomas Reid | Thomas Reid |
| Thomas Sankara | Thomas Sankara |
| Thomas Schelling | Thomas Schelling |
| Thomas Seebeck | Thomas Johann Seebeck |
| Thomas Seymour | Thomas Seymour |
| Thomas Simpson | Thomas Simpson |
| Thomas Stonewall Jackson | Thomas Jonathan Jackson |
| Thomas Sørensen | Thomas Sørensen |
| Thomas Tallis | Thomas Tallis |
