| Name | Meaning | Gender | Origin |
|---|
| Snickers | A brand of candy bar. | Unisex | |
| Snowball | | Unisex | |
| Snuggles | To curl up closely, cuddle | Male | |
| Snuggles | To curl up closely, cuddle | Male | |
| Socks | Short stockings finishing above the ankle | Unisex | |
| Socrates | | Male | |
| Sophie | Wisdom. Variant of Sophia
| Female | |
| Spartacus | from the city of Sparta | Male | Latin |
| Spooky | | Unisex | |
| Squiggle | | Unisex | |
| Styx | from Greek mythology, the river that formed the boundary between earth and the underworld | 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 |
| Tabasco | American spicy sauce made from red peppers. | Male | |
| Taboo | | Male | |
| Taffy | Sticky candy | Male | Welsh |
| Tallulah | leaping water | Female | Irish |
| Tarot | | Male | Hebrew |
| Tarzan | | Male | |
| Tazz | | Unisex | |
| Teacup | | Female | Hebrew |
| Teddy | From Edward - Prosperous guardian | Unisex | |
| Thunder | Sound produced from lightning | Unisex | |
| Thunder | Sound produced from lightning | Unisex | |
| Thunder | Sound produced from lightning | Unisex | |