| Tsunade | Calm and peaceful, or a Japanese name meaning 'calm wave' |
| Tubal Cain | Thou shall be brought of Cain |
| Tuckar | A name meaning a cloth merchant. |
| Tucky | A name meaning a lucky person. |
| Tuckyr | A name meaning a fabric fuller. |
| Tukie | A name meaning small and quiet. |
| Tula.aan | A type of tree in Inuit mythology |
| Tulin | A type of tree in Inuit mythology |
| Tulisa | A type of flower in Inuit mythology |
| Tumbaghai | A type of tree in Indian mythology |
| Tuncay | A Turkish name meaning 'strong and steadfast' |
| Tupelo | A type of tree native to North America |
| Tuppence | A British slang term for two pennies |
| Turandot | A character from an opera by Giacomo Puccini |
| Turid | A Norwegian name meaning 'strong and powerful' |
| Turkessa | A Turkish name meaning 'strong and steadfast' |
| Turquoise | A blue-green mineral used in jewelry |
| Turrell | A name meaning one who lives by a tower. |
| Tuscan | Relating to the Tuscany region in Italy |
| Tuur | A Finnish name meaning 'strong and steadfast' |
| Tuva | A region in southern Siberia, Russia |
| Twilight | Time of day when day meets night, often associated with mystery and romance. |
| Twilla | Diminutive form of Willa, meaning 'resolute protector' or 'strong-willed woman'. |
| Twilliam | Resolute protector |
| Ty Nassir | Combination of Ty and Nassir, meaning 'prince' or 'noble ruler'. |
| Tya | A name meaning a princess or queen. |
| Tyala | Derived from Ty and Ala, meaning 'noble' or 'exalted one'. |
| Tyann | Follower of Christ |
| Tyanna | Combination of Ty and Anna, meaning 'gracious' or 'favored one'. |
| Tyara | A name meaning a jeweled headpiece. |
| Tyarra | Derived from Ty and Ara, meaning 'noble' or 'exalted one'. |
| Tycen | A name meaning a fire or burning one. |
| Tyenna | Combination of Ty and Enna, meaning 'noble' or 'exalted one'. |
| Tyerone | Combination of Ty and Eron, meaning 'noble' or 'exalted one'. |
| Tyesha | Derived from Ty and Esha, meaning 'noble' or 'exalted one'. |
| Tyesn | A name meaning a strong, brave soul. |
| Tyfany | A name meaning a divine appearance. |
| Tygan | Derived from Ty and Gan, meaning 'noble' or 'exalted one'. |
| Tyhrone | Combination of Ty and Eron, meaning 'noble' or 'exalted one'. |
| Tylen | Derived from Ty and Len, meaning 'noble' or 'exalted one'. |