| Name | Meaning | Gender | Origin |
|---|
| Spot | After Data's cat on Star Trek: The Next Generation | Unisex | English |
| Spunky | Spirited, plucky. | Unisex | English |
| Squirt | Slang for a small person | Unisex | English |
| Stone | Stone | Male | English |
| Sunny | Filled with sunlight | Male | English |
| Sushi | Raw fish. | Unisex | English |
| Taco | A folded fried tortilla filled with meat, cheese and spices. | Unisex | English |
| Tank | A large metal container. A heavily armed combat vehicle | Unisex | English |
| Tarzan | White skin | Unisex | Literary |
| Taz | Wild Animal, Thrid Born | Unisex | American |
| T-bone | A thick steak containing a T shaped bone. | Unisex | English |
| Teddy | Gift of God | Male | Greek |
| Theo | Gift of God | Male | Greek |
| Thor | Thunder | Male | Norse |
| Thumper | To walk with heavy steps | Unisex | English |
| Tickles | | Unisex | Hebrew |
| Tiger | Tiger | Unisex | English |
| Tigger | From Winnie the Pooh | Unisex | English |
| Tinker | | Unisex | Hebrew |
| Tiny | Extremely small | Unisex | English |
| Titan | Powerful big man | Unisex | Greek |
| Toby | God is good | Unisex | Hebrew |
| Tommy | Twin | Male | Aramaic |
| Trip | Traveler | Unisex | English |
| Trooper | A state or mounted police officer. Also a member of a cavalry unit. | Unisex | English |
| Trouble | A cause of disturbance or difficulty. | Unisex | English |
| Truffles | Ball shaped chocolate | Unisex | English |
| Truman | Faithful man | Male | English |
| Tucker | Someone who folds cloth | Male | English |
| Tuffy | | Unisex | Hebrew |