| Swain | Man | English Names |
| Swanhilde | Woman | Scandinavian Names |
| Swann | Unisex | English Names |
| Swanson | Unisex | English Names |
| Sweeney | Unisex | Scottish Names |
| Sweyn | Man | Scandinavian Names |
| Swithin | Man | English Names |
| Swoosie | Woman | American Names |
| Sy | Unisex | French Names |
| Syaoran | Man | Chinese Names |
| Sybil | Woman | Greek Names |
| Sycamore | Unisex | English Names |
| Sydnee | Unisex | French Names |
| Sydney | Unisex | French Names |
| Syed | Man | Arabic Names |
| Syesha | Woman | American Names |
| Syler | Unisex | American Names |
| Sylvain | Man | French Names |
| Sylvana | Woman | Latin Names |
| Sylvester | Man | English Names |