| Tacito | | tah-CHEE-to (Italian), tah-THEE-to (Spanish), tah-SEE-to (Latin American Spanish) | Italian, Spanish, Portuguese | |
| Taddeo | | - | Italian | |
| Taide | | - | Italian (Rare) | |
| Tammaro | | - | Italian | |
| Tancredi | | - | Italian | |
| Tania | | TAHN-yə (English), TAN-yə (English), TAH-nyah (Italian) | English, Italian | |
| Tatiana | | tah-TYAH-nah (Russian, Polish, Spanish, Italian), TAH-tee-ah-nah (Finnish), ta-tee-AN-ə (English), ta-TYAN-ə (English) | Russian, Slovak, Bulgarian, Romanian, Polish, Greek, Georgian, Spanish, Portuguese, Italian, Finnish | |
| Tecla | | TE-klah | Italian, Spanish | |
| Teo | | TE-o | Italian, Spanish, Croatian | |
| Teobaldo | | - | Spanish, Portuguese, Italian | |
| 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 | |
| Teodoro | | te-o-DO-ro (Italian), te-o-DHO-ro (Spanish) | Italian, Spanish, Portuguese | |
| Teodosio | | te-o-DHO-syo (Spanish) | Italian, Spanish | |
| Teofila | | te-aw-FEE-lah (Polish) | Italian, Polish | |
| Teofilo | | - | Italian | |