| Name | Meaning | Gender | Origin |
|---|
| Snuggles | To curl up closely, cuddle | Unisex | English |
| Socks | Short stockings finishing above the ankle | Unisex | English |
| Sophia | Wisdom | Female | Greek |
| Sophie | Wisdom | Female | Greek |
| Sparky | Animated, lively. | Unisex | English |
| Speckles | | Unisex | Hebrew |
| Spike | A long, thick sharp-pointed piece of wood or metal | Male | English |
| Sprinkles | | Unisex | Hebrew |
| Squeaky | | Unisex | Hebrew |
| Squirt | Slang for a small person | Unisex | English |
| Stinky | | Unisex | Hebrew |
| Stumpy | A short, thickset person | Unisex | English |
| Sweetie | Sweetheart. | Unisex | English |
| Taboo | | Unisex | Hebrew |
| Tallulah | Abundance, lady, princess | Female | Gaelic |
| Tango | | Unisex | Hebrew |
| Tao | Apple | Male | Vietnamese |
| Taz | Wild Animal, Thrid Born | Unisex | American |
| Ted | Gift of God | Male | Greek |
| Teddy | Gift of God | Male | Greek |
| Tempest | Storm | Female | English |
| Tickles | | Unisex | Hebrew |
| Tiny | Extremely small | Unisex | English |
| Toast | | Unisex | Hebrew |
| Toby | God is good | Unisex | Hebrew |
| Tootsie | A girl or young woman. | Unisex | English |
| Truffles | Ball shaped chocolate | Unisex | English |
| Tucker | Someone who folds cloth | Male | English |
| Tulip | | Unisex | Hebrew |
| Twiggy | | Unisex | Hebrew |