| THEOTHELM | | - | Ancient Germanic | |
| THEOTIMOS | | - | Ancient Greek | |
| THEOTIMUS | | - | Ancient Greek (Latinized) | |
| THEOTLEIP | | - | Ancient Germanic | |
| THEOTMAN | | - | Ancient Germanic | |
| THERA | | - | Dutch | |
| THERAPON | | - | Late Greek | |
| THERASIA | | - | Late Roman | |
| Theresa | | [ti'ri:zə] | | |
| THERESA | | tə-REE-sə (English), tə-RAY-zə (English), te-RE-zah (German) | English, German, Swedish, Norwegian, Danish | |
| THERESE | | te-RE-zə (German), te-RES (Swedish), tə-REES (English) | German, Swedish, Norwegian, Danish, English | |
| Theresia | | [ti'ri:zjə] | | |
| THERESIA | | tə-RAY-see-ah (Dutch) | German, Dutch, Swedish | |
| THERON | | - | Ancient Greek | |
| THERSA | | - | Biblical Latin, Biblical Greek | |