| Simona | | - | Italian, Czech, Slovak, Romanian, Lithuanian, Slovene, Bulgarian, Macedonian | |
| SlavomÍR | | - | Czech, Slovak | |
| SoŇA | | - | Czech, Slovak | |
| Sofia | | zo-FEE-ah (German), so-FEE-ah (Italian), soo-FEE-ə (Portuguese), SO-fee-ah (Finnish) | Norwegian, Swedish, German, Italian, Portuguese, Catalan, Greek, Finnish, Estonian, Slovak, Romanian | |
| Stanislav | | stah-nee-SLAHF (Russian) | Czech, Slovak, Russian, Ukrainian, Bulgarian, Slovene, Serbian, Croatian, Medieval Slavic | |
| Stanislava | | stah-nee-SLAH-vah (Russian) | Czech, Slovak, Bulgarian, Serbian, Croatian, Slovene, Russian, Medieval Slavic | |
| Svetlana | | svyet-LAH-nah (Russian), sveet-LAH-nah (Russian) | Russian, Slovak, Bulgarian, Serbian, Macedonian | |
| TadeÁŠ | | - | Czech, Slovak | |
| 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 | |
| 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 | |
| Teodor | | te-AW-dawr (Polish), TE-o-dor (Croatian) | Swedish, Norwegian, Danish, Romanian, Czech, Slovak, Polish, Serbian, Croatian, Slovene, Hungarian, | |
| TerÉZia | | TE-ray-zee-aw (Hungarian) | Hungarian, Slovak | |
| Tibor | | - | Hungarian, Czech, Slovak | |
| Timotej | | - | Slovene, Macedonian, Slovak | |
| TomÁŠ | | - | Czech, Slovak | |