| Sprig | Unisex | American Names |
| Stannis | Man | American Names |
| Star | Unisex | American Names |
| Starla | Woman | American Names |
| Starlin | Unisex | American Names |
| Stash | Man | American Names |
| Step | Man | American Names |
| Stetson | Unisex | American Names |
| Stevany | Woman | American Names |
| Steveanna | Woman | American Names |
| Storm | Unisex | American Names |
| Stormy | Unisex | American Names |
| Story | Unisex | American Names |
| Studs | Man | American Names |
| Suave | Unisex | American Names |
| Suewinda | Woman | American Names |
| Sugar | Woman | American Names |
| Sume | Unisex | American Names |
| Sunday | Unisex | American Names |
| Sundown | Unisex | American Names |