| Thracius | | - | Ancient Roman | |
| Tiberiu | | - | Romanian | |
| Tiberius | | ti-BE-ri-uws | Ancient Roman | |
| Tiburtius | | - | Ancient Roman | |
| Timotei | | - | Bulgarian, Romanian | |
| Titiana | | - | Ancient Roman | |
| Titianus | | - | Ancient Roman | |
| Titus | | TI-tuws (Ancient Roman), TIE-təs (English) | Ancient Roman, English, Biblical, Biblical Latin | |
| Toma (2) | | TO-mah (Croatian, Serbian) | Romanian, Croatian, Serbian, Bulgarian, Macedonian, Georgian | |
| Traian | | - | Romanian | |
| Traianus | | - | Ancient Roman | |
| Tristan | | TRIS-tən (English), trees-TAWN (French) | Welsh, English, French, Arthurian Romance | |
| Tudor (2) | | - | Romanian | |
| Tullia | | - | Italian, Ancient Roman | |
| Tullius | | - | Ancient Roman | |