| Name | Meaning | Gender | Origin |
|---|
| Seiichi | Sincere one | Male | Japanese |
| Seiko | Sincere child | Unisex | Japanese |
| Shadow | Shadow | Unisex | English |
| Shinichi | One truth | Male | Japanese |
| Shino | Of faith | Male | Japanese |
| Shiori | Bookmark | Unisex | Japanese |
| Shoichi | First Son Of Sho | Male | Japanese |
| Shuichi | One lord | Male | Japanese |
| Silver | Silver (the metal or colour) | Male | English |
| Smoky | | Unisex | Hebrew |
| Soda | A carbonated water. | Unisex | English |
| Soma | The nectar of immortality | Male | Sanskrit |
| Sparky | Animated, lively. | Unisex | English |
| Spike | A long, thick sharp-pointed piece of wood or metal | Male | English |
| Steven | Crown | Male | Greek |
| Sushi | Raw fish. | Unisex | English |
| Taro | Plump son | Male | Japanese |
| Teddy | Gift of God | Male | Greek |
| Terence | Uncertain | Male | Latin |
| Thomas | Twin | Male | Aramaic |
| Toby | God is good | Unisex | Hebrew |
| Tom | Twin | Male | Aramaic |
| Tomo | Wisdom | Male | Japanese |
| Toshi | Harvest | Male | Japanese |
| Tsubasa | Wing | Unisex | Japanese |
| Tucker | Someone who folds cloth | Male | English |
| Washi | Eagle | Male | Japanese |
| Whisper | | Unisex | Hebrew |
| William | Will, desire and helmet, protection | Male | Germanic |
| Wilson | Son of William | Male | English |