| Name | Meaning | Favorites |
| Sian | God's Gracious Gift | |
| Sibley | Family, Related | |
| Sibyl | Prophetic, Wise | |
| Siddhi | Achievement, Ever ready to protect, Goddess, Lord Shiva | |
| Siddiqah | One who keeps her word | |
| Sidonie | Flower | |
| Sidra | Of the stars | |
| Sienna | Reddish brown | |
| Sihaam | Arrows | |
| Siham | Arrows | |
| Silver | White | |
| Silvia | Of the woods | |
| Sima | Face | |
| Simbar | Having a white complexion | |
| Simin | Silvery | |
| Simindokht | Silvern girl | |
| Simona | Loud, One who hears | |
| Simone | It is heard | |
| Simran | God’s gift | |
| Simrit | Remembered | |
