| Name | Meaning | Gender | Origin |
|---|
| Stella | a star | Female | Latin |
| Stewie | | Unisex | |
| Stormy | | Female | |
| Stripe | | 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 |
| Suki | beloved | Female | Japanese |
| Summer | summer season | Female | Word |
| Sunshine | Rays from the sun. Cheerfulness | Female | Word |
| Sushi | Raw fish. | Unisex | |
| Sushi | Raw fish. | Unisex | |
| Suzie | | Female | |
| Sydney | from city of St. Denis | Female | |
| Tabby | | Unisex | |
| Tabitha | gazelle, roe-buck | Female | Aramaic |
| Tallulah | leaping water | Female | Irish |
| Tank | A large metal container. A heavily armed combat vehicle | Unisex | |
| Tawny | A light brown colour | Female | English |
| Teacup | | Female | Hebrew |
| Teddy | From Edward - Prosperous guardian | Unisex | |
| Tess | fourth born | Female | English |
| Thumper | To walk with heavy steps | Unisex | |
| Tia | Aunt
| Female | Spanish |
| Tiara | turban, flower name | Female | Latin |