| Theriak | antidote |
| Theia | Theia |
| Thermik | thermal |
| thermal | thermal |
| Sheliak | Beta Lyrae |
| Thekla | Thecla |
| Theresia | Teresa |
| Theron | Theron |
| Thetis | Thetis |
| Eutheria | Eutheria |
| Othering | othering otherization |
| Theist | theist |
| Theiß | Tisza |
| Thema | theme topic subject |
| Theorie | theory |
| Theresa | Teresa |
| Therme | thermal bath thermal spring |
| Thermit | thermite |
| Theta | theta |
| Herta | Hertha |