| Theatres des Vampires | Theatres des Vampires |
| Thecodontia | Thecodontia |
| Thecodontosaurus | Thecodontosaurus |
| Theda Bara | Theda Bara |
| Theed | Theed |
| Thelephorales | Thelephorales |
| Thelocactus | Thelocactus |
| Thelonious Monk | Thelonious Monk |
| Thengel | Thengel |
| Theo de Raadt | Theo de Raadt |
| Theo van Doesburg | Theo van Doesburg |
| Theo Van Gogh | Theo van Gogh |
| Theo Walcott | Theo Walcott |
| Theobald Boehm | Theobald Böhm |
| Theobald von Bethmann-Hollweg | Theobald von Bethmann-Hollweg |
| Theobald Wolfe Tone | Theobald Wolfe Tone |
| Theobroma cacao | Theobroma cacao |
| Theodor Adorno | Theodor Adorno |
| Theodor Herzl | Theodor Herzl |
| Theodor Heuss | Theodor Heuss |
| Theodor Mommsen | Theodor Mommsen |
| Theodor Schwann | Theodor Schwann |
| Theodor Svedberg | Theodor Svedberg |
| Theodore Dreiser | Theodore Dreiser |
| Theodore Harold Maiman | Theodore Harold Maiman |
| Theodore Kaczynski | Theodore Kaczynski |
| Theodore Roosevelt | Theodore Roosevelt |
| Theodore Sturgeon | Theodore Sturgeon |
| Theodore William Richards | Theodore Richards |
| Theodoros Papaloukas | Theodoros Papaloukas |
| Theodorus van Gogh | Theo van Gogh |
| Theodric di Bernicia | Teodric de Bernicia |
| Theofanis Gekas | Theofanis Gekas |
| TheOpenCD | TheOpenCD |
| Theora | Theora |
| Theotokos | Theotokos |
| Theraphosidae | Theraphosidae |
| Therapsida | Therapsida |
| There Is Nothing Left to Lose | There is Nothing Left to Lose |
| Theremin | Theremín |
| Theres | Teres I |
| Theria | Theria |
| Therizinosauria | Therizinosauroidea |
| Therizinosaurus cheloniformis | Therizinosaurus |
| Thermal Design Power | Thermal Design Power |
| Thermaltake | Thermaltake |
| Theropithecus gelada | Theropithecus gelada |
| Theropoda | Theropoda |
