| Tajana | | - | Croatian, Serbian | |
| Tamara | | tah-MAH-rah (Russian, Spanish, Italian), tə-MAHR-ə (English), TAM-ə-rə (English) | Russian, Ukrainian, Czech, Slovak, Polish, Slovene, Croatian, Serbian, Macedonian, English, Dutch, S | |
| Tanja | | TAHN-yah (German, Finnish) | German, Finnish, Serbian, Croatian, Slovene, Macedonian, Danish, Swedish, Norwegian | |
| Tatjana | | TAHT-yah-nah (Finnish) | Serbian, Croatian, Slovene, Macedonian, German, Latvian, Lithuanian, Finnish | |
| 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 | |
| Tihana | | - | Croatian, Serbian | |
| Tihomir | | - | Croatian, Bulgarian, Serbian, Macedonian | |
| Tijana | | - | Serbian, Croatian | |
| Todor | | - | Bulgarian, Serbian, Macedonian | |
| Toma (2) | | TO-mah (Croatian, Serbian) | Romanian, Croatian, Serbian, Bulgarian, Macedonian, Georgian | |
| Tomislav | | - | Croatian, Serbian, Slovene, Medieval Slavic | |
| Tomislava | | - | Croatian, Serbian, Medieval Slavic | |