| Name | Meaning | Gender | Origin |
|---|
| Snuggles | To curl up closely, cuddle | Male | |
| Snuggles | To curl up closely, cuddle | Male | |
| Sofia | wisdom | Female | Greek |
| Sophia | Wisdom.
| Female | Greek |
| Sophie | Wisdom. Variant of Sophia
| Female | |
| Sorbet | | Unisex | |
| Sorrel | reddish brown | Male | Botanical |
| Sparkle | To shine with animation | Unisex | |
| Spazzy | | Unisex | Hebrew |
| Sprinkles | | Unisex | |
| Spunkie Girl | | Unisex | Hebrew |
| Squat | | Unisex | Hebrew |
| Squirt | Slang for a small person | Unisex | |
| Star | A celestial body that emits light. A famous performer. | Female | Word |
| Star | A celestial body that emits light. A famous performer. | Female | Word |
| Stella | a star | Female | Latin |
| Stella | a star | Female | Latin |
| Stormie | | Unisex | |
| Sugar | A sweet powder from sugar cane. Slang for sweetheart. | Female | Literary |
| Sugar | A sweet powder from sugar cane. Slang for sweetheart. | Female | Literary |
| Suki | beloved | Female | Japanese |
| Summer | summer season | Female | Word |
| Sunshine | Rays from the sun. Cheerfulness | Female | Word |
| Suri | princess | Female | Hebrew |
| Sweet Pea | | Female | |