| Tredon | Derived from the Old English word 'trēdon', meaning 'settlement' or 'town'. |
| Trei | A name meaning the number three. |
| Trek | A name suggesting a person who enjoys traveling or exploring. |
| Tremere | Derived from the Latin word 'tremere', meaning 'to tremble' or 'to be afraid'. |
| Trendun | A modern, trendy sounding name. |
| Trentan | A variant of the name Trent. |
| Trentine | A name related to the Trent. |
| Trentino | From the Trentino region area. |
| Trento | Named after the city in Italy. |
| Trentonio | A variant of Trent, meaning the river. |
| Trentton | Derived from the town by the river. |
| Trentyn | A modern name meaning river dweller. |
| Treston | Derived from the Old English word 'trēstan', meaning 'settlement' or 'town'. |
| Trevore | A name meaning from the large town. |
| Trevorsub | A unique name meaning under Trevor. |
| Trevour | A variant meaning from the big farm. |
| Trevyr | A name meaning from the river bank. |
| Treyce | A mark left by the passage of something, a very small amount, to follow the trail of something |
| Treyden | A variant of the name Trey. |
| Treye | A variant of the name Trey. |
| Treysen | Derived from the Old English word 'trēsan', meaning 'settlement' or 'town'. |
| Treyson | Strong and courageous, derived from the Old English words 'treg' and 'son' |
| Treyvor | A variant of the name Trevor. |
| Trig | Three-cornered, derived from the Old English word 'trig' |
| Trigger | One who sets off or activates something, derived from the Old English word 'trig' |
| Trinian | Derived from the Latin words 'tri' and 'nian', meaning three-crowned |
| Trint | A short form of the name Trent. |
| Trinten | A variant of the name Trenton. |
| Trintin | A variant of the name Trenton. |
| Trinton | A variant of the name Trenton. |
| Trippton | Derived from the Old English words 'trip' and 'pton', meaning three-enclosure |
| Troah | A name meaning a path or a journey. |
| Trotter | One who walks or runs with a steady pace, derived from the Old English word 'trot' |
| Troyce | Derived from the Old English words 'troy' and 'ce', meaning from Troy |
| Troyton | One who comes from the town of Troy. |
| Truen | Derived from the Old English word 'tru', meaning true |
| Truth | The state of being true or real, derived from the Old English word 'tru' |
| Trym | Derived from the Old Norse word 'Trym', meaning mighty or powerful |
| Tryver | One who tries or attempts to do something |
| Tubal Cain | Thou shall be brought of Cain |