| StanisŁAwa | | stah-nee-SWAH-vah | Polish | |
| Stefan | | SHTE-fahn (German), STAY-fahn (Dutch), STE-fahn (Polish) | German, Swedish, Norwegian, Danish, Dutch, Polish, Bulgarian, Macedonian, Serbian | |
| Stefania | | ste-FAH-nyah (Italian), ste-FAHN-yah (Polish) | Italian, Polish | |
| Stefcia | | STEF-chah | Polish | |
| Stefek | | - | Polish | |
| SulisŁAw | | suw-LEE-swahf | Polish | |
| Sybilla | | - | Polish, Late Roman | |
| Sylwester | | sil-VES-ter | Polish | |
| Sylwia | | SIL-vyah | Polish | |
| SzczĘSny | | SHCHENS-ni | Polish | |
| Szczepan | | SHCHE-pahn | Polish | |
| Szymon | | SHI-mawn | Polish | |
| Tadeusz | | tah-DE-uwsh | Polish | |
| 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 | |