| 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 | |
| Teodozja | | te-aw-DAW-zyah | Polish | |
| Teofil | | te-AW-feel | Polish | |
| Teofila | | te-aw-FEE-lah (Polish) | Italian, Polish | |
| Teresa | | te-RE-sah (Spanish, Polish), te-RE-zah (Italian, German), TE-re-sah (Finnish), tə-REE-sə (English), tə-REE-zə (English) | Spanish, Portuguese, Italian, Finnish, Polish, German, Swedish, Norwegian, Danish, English | |
| Tobiasz | | TAW-byahsh | Polish | |
| Tomasz | | TAW-mahsh | Polish | |
| Tomek | | TAW-mek | Polish | |
| Tosia | | TAW-shah | Polish | |
| Tymon | | TI-mawn | Polish | |
| Tymoteusz | | ti-maw-TE-uwsh | Polish | |
| Tytus | | TI-tuws | Polish | |
| Ula | | - | Polish | |
| Urban | | UWR-bahn (Polish), UR-bən (English) | Danish, Swedish, German, Polish, Slovene, Biblical, History | |