| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| SYNNÖVE | - | Swedish | ||
| SYNNE | - | Norwegian | ||
| SYNTYCHE | SIN-tə-kee (English) | Biblical, Biblical Greek, Ancient Greek | ||
| SYUZANNA | - | Russian | ||
| SZABINA | SAW-bee-naw | Hungarian | ||
| SZABOLCS | - | Hungarian | ||
| SZANDRA | - | Hungarian | ||
| SZCZĘSNY | SHCHENS-ni | Polish | ||
| SZCZEPAN | SHCHE-pahn | Polish | ||
| SZILÁRD | - | Hungarian | ||
| SZILVESZTER | SEEL-ves-ter | Hungarian | ||
| SZILVIA | SEEL-vee-aw | Hungarian | ||
| SZONJA | SON-yaw | Hungarian | ||
| SZYMON | SHI-mawn | Polish |