| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Tamara | tah-MAH-rah (Russian, Spanish, Italian), tə-MAHR-ə (English), TAM-ə-rə (English) | Russian, Ukrainian, Czech, Slovak, Polish, Slovene, Croatian, Serbian, Macedonian, English, Dutch, S | ||
| Tess | TES | English, Dutch | ||
| Teun | TUUN | Dutch | ||
| Teuna | TUU-nah | Dutch | ||
| Teunis | TUU-nis | Dutch | ||
| Thecla | - | Dutch (Rare), Late Greek (Latinized) | ||
| Theo | THEE-o (English), TAY-o (Dutch) | English, Dutch | ||
| Theodoor | - | Dutch | ||
| Theodorus | - | Ancient Greek (Latinized), Dutch | ||
| Theofilus | - | Dutch (Rare) | ||
| Thera | - | Dutch | ||
| Theresia | tə-RAY-see-ah (Dutch) | German, Dutch, Swedish | ||
| Theun | TUUN | Dutch | ||
| Theunis | TUU-nis | Dutch | ||
| Thiemo | - | German, Dutch, Ancient Germanic |