| Name | Gender | Meaning | Favorites |
| Siddeeq | Boy | A true friend, Just, One who is true in word and deed, Sincere | |
| Siddiq | Boy | A true friend, Just, One who is true in word and deed, Sincere | |
| Siddiqah | Girl | One who keeps her word | |
| Sidra | Girl | Of the stars | |
| Sihaam | Girl | Arrows | |
| Siham | Girl | Arrows | |
| Silaah | Boy | Armour, Arms, Weapons | |
| Sima | Girl | Face | |
| Siraaj | Boy | Lamp, Light | |
| Siraj | Boy | Lamp | |
| Sirhan | Boy | Wolf | |
| Sitarah | Girl | Star | |
| Sivia | Girl | A deer | |
| Sivya | Girl | A deer | |
| Sofian | Boy | Devoted | |
| Sohail | Boy | Moon-glow | |
| Soheil | Boy | Star | |
| Soheila | Girl | Star | |
| Sohrab | Boy | A character in Shahnameh, Shining | |
| Soraya | Girl | Princess, Star | |
