| Name | Meaning | Gender | Origin |
|---|
| Sky | Sky | Unisex | Norse |
| Sly | A forest | Unisex | Latin |
| Smokey | A grayish blue colour. Slang for highway patrol officer | Unisex | English |
| Smoky | | Unisex | Hebrew |
| Sonya | Wisdom | Female | Greek |
| Sophie | Wisdom | Female | Greek |
| Sora | Sky | Female | Japanese |
| Sparky | Animated, lively. | Unisex | English |
| Spike | A long, thick sharp-pointed piece of wood or metal | Male | English |
| Spirit | Part of the human being associated with the mind. Vigorous or animated state - spirited. Also distilled alcohol. | Unisex | English |
| Star | Star | Female | Latin |
| Stella | Star | Female | Latin |
| Storm | Violent weather | Female | English |
| Sugar | A sweet powder from sugar cane. Slang for sweetheart. | Female | English |
| Sushi | Raw fish. | Unisex | English |
| Taboo | | Unisex | Hebrew |
| Tahoe | Edge of the lake | Unisex | Native American |
| Taj | Crown | Male | Sanskrit |
| Takako | Noble child | Female | Japanese |
| Takara | Treasure | Female | Japanese |
| Tamiko | Most beautiful child | Female | Japanese |
| Tango | | Unisex | Hebrew |
| Tank | A large metal container. A heavily armed combat vehicle | Unisex | English |
| Tanker | | Unisex | Hebrew |
| Tara | Crag | Female | Gaelic |
| Taro | Plump son | Male | Japanese |
| Tasha | (Christ's) birthday | Female | Latin |
| Taurus | Bull | Unisex | Latin |
| Taz | Wild Animal, Thrid Born | Unisex | American |
| Teddy | Gift of God | Male | Greek |