| Sifaks | Unknown origin, possibly a variant of 'Sifak', a type of lemur |
| Sifal | Derived from Arabic, means 'beautiful' or 'lovely' |
| Sifan | Derived from Arabic, means 'beauty' or 'loveliness' |
| Sifanur | Derived from Arabic, means 'beautiful' or 'lovely' |
| SifarishKhan | Derived from Persian, means 'one who brings good fortune' |
| Sifraan | Derived from Arabic, means 'beautiful' or 'lovely' |
| Sifran | Derived from Arabic, means 'beauty' or 'loveliness' |
| Sihaan | Derived from Arabic, means 'beautiful' or 'lovely' |
| Sihad | Derived from Arabic, means 'good' or 'excellent' |
| Silaam | A person who brings peace and calm. |
| Silhad | Derived from Arabic, means 'good' or 'excellent' |
| Siliman | Derived from Arabic, means 'peace' or 'tranquility' |
| Simaak | Derived from Arabic, means 'peace' or 'tranquility' |
| Simsarul | Derived from Arabic, means 'one who brings peace' |
| Sinanuddin | Derived from Arabic, means 'gracious' or 'generous' |
| Sineen | Derived from Arabic, means 'gracious' or 'generous' |
| Sinshad | Derived from Arabic, means 'good' or 'excellent' |
| Sinwaan | Palm Trees Grow from Same Root |
| Siraat | The straight and righteous life path. |
| Siraatullah | Derived from Arabic, means 'path of God' |
| Siraaz | Derived from Arabic, means 'one who guides' |
| Sirajaddin | Derived from Arabic, means 'light of the faith' |
| Sirajdeen | Derived from Arabic, means 'light of the faith' |
| Sirajeddin | Prince of the light of faith |
| SirajudDawlah | Prince of the light of the ruler |
| Sirajuddeen | Prince of the light of the faith |
| Sirajudden | Prince of the light of the faith |
| Sirajudeen | Prince of the light of the faith |
| Sirajulhaq | Prince of the light of God |
| Siraz | Prince of the light |
| Sirazuddin | Prince of the light of the faith |
| Sirazul | Prince of the light |
| Sirfan | Prince of the light |
| Sirkheel | Prince of the light |
| Sirwan | Prince of the light |
| Siyad | A leader who is noble and fortunate. |
| Siyas | A leader or one who governs well. |
| Siyaudheen | Prince of the faith |
| Siyaulhaq | The light of the ultimate truth. |
| Siyaz | One who is wise and intelligent. |