| Thisidi | A source of pure happiness. |
| Thisini | A woman of great wisdom. |
| Thismitha | A person who is very smiling. |
| Thisuli | One who possesses a bright smile. |
| Thisum | A name meaning a beautiful flower. |
| Thisumi | One who is like a lovely blossom. |
| Thisuni | A person with a charming nature. |
| Thisura | One who is brave and courageous. |
| Thitika | A name meaning patient or steady. |
| Thivantha | One who is gifted and talented. |
| Thivashinie | A person who is very radiant. |
| Thiven | One who is bright and intelligent. |
| Thivenya | A name meaning a bright light. |
| Thivindi | One who brings great joy. |
| Thivindu | A name meaning the full moon. |
| Thiviru | One who is brave and strong. |
| Thiwandara | A person of noble character. |
| Thiyanshika | Beauty of the World |
| Thiyashini | One who is full of beauty. |
| Thodupuzha | A place near the river bank. |
| Thoe | A name meaning a gift of God. |
| Thohfa | A name meaning a precious gift. |
| Thomasia | One who is a twin by nature. |
| Thomason | Son of Thomas, an English name meaning a descendant |
| Thomasyn | A feminine variant of Thomas. |
| Thomasyne | A graceful form of the name Thomas. |
| Thomeson | Son of the man named Thomas. |
| Thomsen | Son of Thomas, a Danish name meaning a descendant |
| Thong | A name meaning gold in Thai. |
| Thong Daeng | A name meaning red gold in Thai. |
| Thong Khao | A name meaning white gold in Thai. |
| Thong Thaem | gold to be added |
| Thong Thao | gold being inset |
| Thorani | Derived from the earth goddess. |
| Thorby | From the village of Thor in Norse. |
| Thordell | Ruler of the people, a Scandinavian name meaning leader |
| Thoreau | Thoreau is a surname derived from the Old Norse name Thorvald |
| Thoshitha | One who brings great happiness. |
| Thoufeera | A name meaning a successful person. |
| Thouseena | A name meaning a beautiful flower. |