| Name | Gender | Meaning | Favorites |
| Rosalia | Girl | Combination of Rose and Lily | |
| Rosalina | Girl | Rose | |
| Rufa | Girl | Red-Haired | |
| Rufina | Girl | Red-Haired | |
| Rufio | Boy | Red-Haired | |
| Rufo | Boy | Red-Haired | |
| Sancho | Boy | Holy | |
| Serena | Girl | Serene | |
| Serene | Girl | Calm or Peaceful | |
| Silvanos | Boy | Forest Dweller | |
| Silvester | Boy | Forest Dweller | |
| Silvia | Girl | Of the woods | |
| Silvio | Boy | From the forest | |
| Stephenson | Boy | Crown | |
| Stevan | Boy | Crown | |
| Steve | Boy | Crown | |
| Steven | Boy | Crown | |
| Stevenson | Boy | Crown | |
| Sylvester | Boy | From the forest, Woods | |
| Sylvestre | Boy | Of the forest | |
