| Teo | | TE-o | Italian, Spanish, Croatian | |
| Teodor | | te-AW-dawr (Polish), TE-o-dor (Croatian) | Swedish, Norwegian, Danish, Romanian, Czech, Slovak, Polish, Serbian, Croatian, Slovene, Hungarian, | |
| Teodora | | te-o-DAW-rah (Italian), te-o-DHO-rah (Spanish), te-aw-DAW-rah (Polish) | Italian, Spanish, Portuguese, Swedish, Romanian, Polish, Bulgarian, Macedonian, Serbian | |
| Teodosija | | - | Serbian, Macedonian | |
| Te'oma | | - | Ancient Aramaic | |
| Terach | | - | Biblical Hebrew | |
| Terah | | TEE-rə (English) | Biblical | |
| Terentius | | - | Ancient Roman | |
| Tereza | | te-REZ-ah (Romanian) | Czech, Portuguese (Brazilian), Bulgarian, Romanian | |
| Terezie | | - | Czech | |
| Terezija | | - | Slovene, Croatian | |
| Tertius | | TUR-shəs (English) | Ancient Roman | |
| Tess | | TES | English, Dutch | |
| Tetty | | TET-ee | English (Archaic) | |
| Teun | | TUUN | Dutch | |