| Name | Meaning | Gender | Origin |
|---|
| Sputnik | | Unisex | Hebrew |
| Squeeky | | Unisex | |
| Squiggle | | Unisex | |
| Squiggy | | Unisex | |
| Stay | | Unisex | |
| Stinky | | Unisex | |
| Storm | Storm
| Male | Word |
| Stray | | Unisex | |
| Syndrome | after the character in the movie The Incredibles | Unisex | |
| Taco | A folded fried tortilla filled with meat, cheese and spices. | Unisex | |
| Tarbaby | | Unisex | |
| Tarzan | | Male | |
| Tater | | Male | |
| Taz | | Male | |
| Thunder | Sound produced from lightning | Unisex | |
| Thunder | Sound produced from lightning | Unisex | |
| Thunder | Sound produced from lightning | Unisex | |
| Tiger | A large, striped, carnivorous mammal from Asia. | Male | Animal |
| Tiger | A large, striped, carnivorous mammal from Asia. | Male | Animal |
| Tigger | from Winnie the Pooh | Unisex | |
| Toby | God is Good | Male | English |
| Tom | Bartender at the Leaky Cauldron.
| Male | English |
| Toots | | Male | Hebrew |
| Tootsie | A girl or young woman. | Unisex | |
| Tricks | | Unisex | |