| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| 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 |