| Tina | | TEE-nə (English), TEE-nah (Italian, Dutch) | English, Italian, Dutch, Slovene, Croatian, Macedonian | |
| Tine (2) | | - | Slovene | |
| Tinek | | - | Slovene | |
| TjaŠA | | - | Slovene | |
| TjaŽ | | - | Slovene | |
| TomaŽ | | - | Slovene | |
| Tomislav | | - | Croatian, Serbian, Slovene, Medieval Slavic | |
| Tone (1) | | - | Slovene | |
| Tonka | | - | Slovene, Croatian | |
| UrŠKa | | - | Slovene | |
| UrŠUla | | - | Slovene | |
| Urban | | UWR-bahn (Polish), UR-bən (English) | Danish, Swedish, German, Polish, Slovene, Biblical, History | |
| Urh | | - | Slovene | |
| UroŠ | | - | Serbian, Slovene | |
| Valentin | | VAH-len-teen (German), vah-lyen-TEEN (Russian), vah-leen-TEEN (Russian) | French, Romanian, German, Danish, Swedish, Norwegian, Czech, Russian, Bulgarian, Slovene, Croatian, | |