| Name | Meaning | Gender | Origin |
|---|
| Sandy | Abbreviation of Alexander defender of man.
| Male | Scottish |
| Satchel | Sack, Bag | Male | English |
| Scooter | One who goes suddenly and speedily. | Male | |
| Smokey | A grayish blue colour. Slang for highway patrol officer | Male | |
| Smokey | A grayish blue colour. Slang for highway patrol officer | Male | |
| Smokey | A grayish blue colour. Slang for highway patrol officer | Male | |
| Sparky | Animated, lively. | Unisex | |
| Splinter | | Unisex | Hebrew |
| Stan | after the South Park character Stan Marsh | Male | Short |
| Stonewall | | Unisex | Hebrew |
| Stretch | To extend to full length. | Unisex | |
| Ted | English, wealthy guardian | Male | English |
| Teddy | From Edward - Prosperous guardian | Unisex | |
| Thumper | To walk with heavy steps | Unisex | |
| Thunderbolt | | Unisex | Hebrew |
| Tim | Greek, honoring God | Male | Greek |
| Timothy | honoring God | Male | Greek |
| Tom | Bartender at the Leaky Cauldron.
| Male | English |
| Tommy | From Thomas - The twin. | Male | English |
| Tony | priceless one | Male | English |
| Train | | Unisex | |
| Trojan | | Unisex | Hebrew |
| Turkey | | Unisex | |
| Ty | Abbreviation For Names Beginning With Ty-. | Male | English |
| Vic | Victorious, Conqueror | Unisex | English |