| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| SINTA | SEEN-tah | Indonesian, Javanese | ||
| SIOBHÁN | shi-VAWN | Irish | ||
| SIOFRA | SHEEF-rə | Irish | ||
| SIONANN | - | Irish Mythology | ||
| SIONED | SHON-ed | Welsh | ||
| SIORS | - | Welsh | ||
| SIORUS | - | Welsh | ||
| SIOTHRÚN | - | Irish | ||
| SIPHO | - | Southern African, Xhosa | ||
| SIRAN | - | Armenian | ||
| SIRANUSH | - | Armenian | ||
| SIRI | SEE-ree (Swedish) | Swedish, Norwegian, Danish | ||
| SIRIPORN | - | Thai | ||
| SIRIUS | SIR-ee-əs (English), SEER-ee-əs (English) | Astronomy | ||
| SIRPA | SEER-pah | Finnish |