| Thembeka | Gift of God, a Zulu name meaning a blessing from above |
| Themistocles | Glorious at law, a Greek name meaning wise in law |
| Theoden | Ruler of the people, a Germanic name meaning leader |
| Theodocia | Gift of God, a Greek name meaning a divine gift |
| Theoni | Gift of God, a Greek name meaning a divine gift |
| Theophilius | Lover of God, a Greek name meaning devoted to God |
| Theophrastus | Gift of God, a Greek name meaning a divine gift |
| Theosiphus | Gift of God, a Greek name meaning a divine gift |
| Theres | Goddess of the harvest, a Greek name meaning a goddess |
| Thereza | A name meaning to harvest. |
| Thersander | Defender of the people, a Greek name meaning protector |
| Theryn | Goddess of the hunt, a Greek name meaning a goddess |
| Thessaly | Region in northern Greece, a name meaning a place |
| Thierri | Noble, a French name meaning a noble person |
| Thomason | Son of Thomas, an English name meaning a descendant |
| Thomasyn | A feminine variant of Thomas. |
| Thomasyne | A graceful form of the name Thomas. |
| Thomsen | Son of Thomas, a Danish name meaning a descendant |
| Thordell | Ruler of the people, a Scandinavian name meaning leader |
| Thoreau | Thoreau is a surname derived from the Old Norse name Thorvald |
| Thrace | Region in northern Greece, a name meaning a place |
| Thulani | Gift of God, a Zulu name meaning something or someone given by God. |
| Thurgo | A surname of Germanic origin, possibly meaning 'thunder' or 'storm'. |
| Thurgood | An English surname derived from 'thor' meaning 'thunder' and 'good'. |
| Thyia | A Greek name derived from 'thyos' meaning 'divine' or 'sacred'. |
| Thyone | A Greek name derived from 'thyos' meaning 'divine' or 'sacred'. |
| Thyrra | A Greek name derived from 'thyos' meaning 'divine' or 'sacred'. |
| Thyrza | A pleasant and delightful girl. |
| Tiaan | A Welsh name meaning 'fire' or 'passionate'. |
| Tiarna | An Irish name meaning 'lord' or 'master'. |
| Tiarne | An Irish name meaning 'lord' or 'master'. |
| Tiberiu | A Romanian name derived from the Latin 'Tiberius'. |
| Tibet | A name derived from the Tibetan region, meaning 'land of snow'. |
| Tibetin American Boy Name | To flow down, descend |
| Tide | An English name meaning 'sea wave' or 'ocean movement'. |
| Tidus | A Latin name meaning 'of the sea' or 'ocean'. |
| Tie | A bond that connects two people. |
| Tiegan | A Gaelic name meaning 'little fire' or 'passionate'. |
| Tiera | A name derived from the Latin 'terra' meaning 'earth' or 'land'. |
| Tierce | A French name meaning 'third' or 'middle'. |