| Name | Meaning | Gender | Origin |
|---|
| Sugar | A sweet powder from sugar cane. Slang for sweetheart. | Female | Literary |
| Sugar | A sweet powder from sugar cane. Slang for sweetheart. | Female | Literary |
| Susi | | Unisex | Hebrew |
| Sweetie | Sweetheart. | Male | |
| Sylvester | A cartoon cat that tried to eat the bird character Tweety. He was a black and white cat.
| Male | Latin |
| 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 | |
| Tinkerbell | | Unisex | |
| Toby | God is Good | Male | English |
| Tom | Bartender at the Leaky Cauldron.
| Male | English |
| Trouble | A cause of disturbance or difficulty. | Male | |
| Tucker | Tucker of doth
| Male | English |
| Whiskers | | Unisex | |
| Willow | Slender:graceful. From the willow tree noted for slender graceful branches and leaves.
| Female | English |
| Ziggy | | Male | |
| Zoe | life | Female | Greek |
| Zoey | | Female | |