| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| SYBIL | SIB-əl | English | ||
| SYBILLA | - | Polish, Late Roman | ||
| SYBILLE | see-BI-lə (German) | German, French | ||
| SYD | SID | English | ||
| SYDNE | SID-nee | English (Rare) | ||
| Sydney | ['sidni] | |||
| SYDNEY | SID-nee | English | ||
| SYDNIE | SID-nee | English (Modern) | ||
| SYED | - | Urdu, Punjabi, Bengali | ||
| SYEDA | - | Urdu | ||
| SYLVAIN | seel-VEN | French | ||
| SYLVAINE | seel-VEN | French | ||
| SYLVANA | sil-VAN-ə (English) | Various | ||
| SYLVANUS | - | English (Archaic) | ||
| Sylvester | [sil'vestə] |