| Name | Meaning | Gender | Origin |
|---|
| Storm | Storm
| Male | Word |
| Sunflower | | Unisex | |
| Sunlight | | Unisex | |
| Sunny | Abounding in sunshine, cheerful | Male | Nickname |
| Sunrise | | Unisex | |
| Sunset | Daily disappearance of the sun below the horizon. Usually red, yellow or orange in colour. | Unisex | |
| Swan | | Unisex | Hebrew |
| Tahoe | edge of the lake | Male | Native |
| Taurus | bull | Male | Latin |
| Teal | Bluish Green Color | Male | English |
| Thicket | | Unisex | |
| Thistle | thistle | Unisex | |
| 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 |
| Tiger Lilly | | Unisex | |
| Tigerlily | | Unisex | |
| Timber | Wood used as a building material. Also timber-wolf. | Male | Nature |
| Tree | | Unisex | Hebrew |
| Tsunami | Tidal wave | Unisex | |
| Turtle | | Male | |
| Twilight | | Unisex | |
| Twister | A cyclone or tornado. | Unisex | |