| Tonino | Priceless; of inestimable worth |
| Tonni | A variant meaning praiseworthy. |
| Tonnia | A name meaning highly valued. |
| Tonny | A diminutive of Anthony, dear. |
| Tonyea | A name meaning flourishing one. |
| Tonyetta | A feminine form of Anthony. |
| Tonyia | A variant meaning flourishing. |
| Torance | A name meaning from the hills. |
| Toria | A form of tori; tory |
| Trant | One who is a traveler or wanderer. |
| Trante | A person who is very determined. |
| Travais | Derived from a word for hard work. |
| Travees | One who crosses paths with others. |
| Traver | The act of passing through a gate or crossing a river or bridge |
| Traves | A name meaning to cross or travel. |
| Traveus | A person who enjoys long journeys. |
| Travious | One who is bold and adventurous. |
| Traviss | A name meaning a toll collector. |
| Travius | A modern name of uncertain origin. |
| Travon. trevon | Fair town. Abbreviation of Trevelyan. |
| Trendon | Derived from a town near a river. |
| Trenna | Trenna is a variant of the name Trina, meaning 'strong and powerful' or 'warrior'. |
| Treslyn | Treslyn is a Welsh surname derived from the words 'tri' meaning three and 'lys' meaning court or mansion. |
| Trevik | A homestead; an estate; great; large |
| Trevvor | From the large village |
| Trisan | A variant of the name Tristan. |
| Tristain | A variation of the name Tristan. |
| Tristann | A sorrowful man; in arthurian legend; a knight of the round table |
| TristannTristin | A unique, combined name variant. |
| Truvy | Spear; maiden; dear; strength |
| Tsipporah | Hebrew name meaning little bird. |
| Tu | A name meaning map or earth in Chinese. |
| Tundra | Treeless, grassy plain in Arctic regions, often associated with cold, harsh climate and limited vegetation. |
| Twillian | Derived from the older Lilion; lily |
| Tygon | Beautiful; creative |
| Tyller | A tiler of roofs |
| Tyquann | A modern name meaning a noble leader. |
| Tyrae | A name meaning a gift from the heavens. |
| Tyray | A name meaning a bright shining light. |
| Tyrey | A name meaning a strong, steady person. |