| Name | Meaning | Gender | Origin | Rashi |
|---|---|---|---|---|
| Siam | Fasting | 👦 Boy | Bengali | — |
| Siamak | Black-haired; A mythical prince | 👦 Boy | Persian | — |
| Sian | God is gracious (Jane) | 👧 Girl | Welsh | — |
| Siaosi | Farmer (George) | 👦 Boy | Pacific | — |
| Siavash | A noble prince of the Shahnameh (سیاوش) | 👦 Boy | Persian | — |
| Sibel | Wild flower; Prophetess (Sybil) | 👧 Girl | Turkish | — |
| Sibonelo | Example | 👦 Boy | Zulu | — |
| Sibongile | We are grateful | 👧 Girl | Zulu | — |
| Sibongiseni | Thank (God) | 👦 Boy | Zulu | — |
| Siboniso | Sign; Example | 👦 Boy | Zulu | — |
| Sibusiso | Blessing | 👦 Boy | Zulu | — |
| Sibylle | Prophetess | 👧 Girl | German | — |
| Sicelo | Request; Prayer | 👦 Boy | Zulu | — |
| Sid | Wide island (Sidney); Lord | 👦 Boy | English | — |
| Sidar | Shade; Shadow | 👦 Boy | Kurdish | — |
| Siddhant | Principle; Doctrine | 👦 Boy | Sanskrit | Kumbh |
| Siddharth | One who has achieved his goal; The Buddha | 👦 Boy | Sanskrit | Kumbh |
| Siddhartha | One who has achieved his goal; The Buddha's birth name | 👦 Boy | Pali | Kumbh |
| Siddhesh | Lord of accomplishment | 👦 Boy | Marathi | Kumbh |
| Siddhi | Achievement | 👧 Girl | Gujarati | Kumbh |
| Siddig | Truthful; Faithful friend | 👦 Boy | Arabic | — |
| Siddik | Truthful; Faithful friend | 👦 Boy | Turkish | — |
| Siddiq | Truthful; Title of Abu Bakr | 👦 Boy | Arabic | — |
| Siddique | Truthful; Faithful friend | 👦 Boy | Arabic | — |
| Sidi | My master; Lord | 👦 Boy | Arabic | — |
| Sidinei | Wide island (Sidney) | 👦 Boy | Portuguese | — |
| Sidnei | Wide island (Sidney) | 👦 Boy | Portuguese | — |
| Sidney | Wide island | 👦 Boy | English | — |
| Sidonie | From Sidon | 👧 Girl | French | — |
| Sidra | A tree in the seventh heaven (Sidrat al-Muntaha) | 👧 Girl | Arabic | — |
| Sief | Sword | 👦 Boy | Arabic | — |
| Siegfried | Victory and peace | 👦 Boy | German | — |
| Sierra | Mountain range | 👧 Girl | English | — |
| Siew | Elegant (秀, Hokkien and Cantonese form of Xiu) | 👧 Girl | Cantonese | — |
| Sifiso | Wish; Desire | 👦 Boy | Zulu | — |
| Sigal | Violet flower | 👧 Girl | Hebrew | — |
| Sigifredo | Victory and peace | 👦 Boy | Spanish | — |
| Signe | New victory | 👧 Girl | Norse | — |
| Sigrid | Beautiful victory | 👧 Girl | Norse | — |
| Sigríður | Beautiful victory | 👧 Girl | Icelandic | — |
| Sigurd | Victory guardian | 👦 Boy | Norse | — |
| Sigurður | Victory guardian | 👦 Boy | Icelandic | — |
| Siham | Arrows | 👧 Girl | Arabic | — |
| Sihame | Arrows | 👧 Girl | Arabic | — |
| Sihem | Arrows | 👧 Girl | Arabic | — |
| Sihle | Beautiful | 🧒 Unisex | Zulu | — |
| Sikandar | Defender of mankind (Alexander) | 👦 Boy | Persian | — |
| Sikander | Defender of mankind (Alexander) | 👦 Boy | Persian | — |
| Sikhumbuzo | Reminder; Memorial | 👦 Boy | Zulu | — |
| Sikiru | Remembrance of God (Dhikr) | 👦 Boy | Yoruba | — |
| Siku | Ice | 🧒 Unisex | Inuit | — |
| Sila | Reunion; Homecoming | 👧 Girl | Turkish | — |
| Silas | Of the forest | 👦 Boy | Greek | — |
| Silina | Moon (Selina) | 👧 Girl | Arabic | — |
| Silindile | We have waited | 👧 Girl | Zulu | — |
| Silje | Blind (Cecilia) | 👧 Girl | Norwegian | — |
| Silke | Blind (Cecilia) | 👧 Girl | German | — |
| Silmara | Of the forest | 👧 Girl | Portuguese | — |
| Silvana | Of the forest | 👧 Girl | Italian | — |
| Silvania | Of the forest | 👧 Girl | Portuguese | — |
| Silvano | Of the forest | 👦 Boy | Italian | — |
| Silverio | Of the forest | 👦 Boy | Spanish | — |
| Silvestre | Of the forest | 👦 Boy | Spanish | — |
| Silvestro | Of the forest | 👦 Boy | Italian | — |
| Silvia | Of the forest | 👧 Girl | Latin | — |
| Silvie | Of the forest | 👧 Girl | Czech | — |
| Silvina | Of the forest | 👧 Girl | Spanish | — |
| Silvio | Of the forest | 👦 Boy | Italian | — |
| Silviu | Of the forest | 👦 Boy | Romanian | — |
| Silvy | Of the forest | 👧 Girl | Italian | — |
| Sima | Face; Appearance; Silver; Treasure | 👧 Girl | Persian, Hebrew | — |
| Simangele | We were expecting her | 👧 Girl | Zulu | — |
| Simão | He has heard (Simon) | 👦 Boy | Portuguese | — |
| Simay | Moon face | 👧 Girl | Turkish | — |
| Simba | Lion; Strength; Power | 👦 Boy | Swahili, Shona | — |
| Simbarashe | Power of God | 👦 Boy | Shona | — |
| Simcha | Joy; Happiness | 👧 Girl | Hebrew | — |
| Simeon | He has heard | 👦 Boy | Hebrew | — |
| Simge | Symbol | 👧 Girl | Turkish | — |
| Simisola | Rest in wealth | 👧 Girl | Yoruba | — |
| Simo | He has heard (Simon) | 👦 Boy | Finnish | — |
| Simon | He has heard (Simon) | 👦 Boy | Hebrew, Czech | — |
| Simona | She has heard | 👧 Girl | Romanian | — |
| Simone | He has heard | 🧒 Unisex | Italian | — |
| Simonetta | He has heard | 👧 Girl | Italian | — |
| Simphiwe | We have been given (a gift) | 🧒 Unisex | Zulu | — |
| Simplice | Simple | 👦 Boy | French | — |
| Simran | Remembrance of God (also Sikh) | 👧 Girl | Sanskrit | Kumbh |
| Simranjeet | Victory through remembrance of God | 👧 Girl | Punjabi | Kumbh |
| Sina | The heroine of the Samoan legend of Sina and the eel | 👧 Girl | Samoan | — |
| Sinan | Spearhead | 👦 Boy | Arabic | — |
| Şinasi | Knowing; Expert | 👦 Boy | Turkish | — |
| Sinazo | We have them (blessings) | 👧 Girl | Xhosa | — |
| Sindhu | Ocean; The Indus river | 👧 Girl | Telugu | Kumbh |
| Sindi | Defender of mankind (Cynthia) | 👧 Girl | Zulu | — |
| Sindisiwe | We have been saved | 👧 Girl | Zulu | — |
| Sindiswa | We have been saved | 👧 Girl | Xhosa | — |
| Sindre | Sparkling; A dwarf of Norse myth | 👦 Boy | Norwegian | — |
| Sindy | Moon (Cynthia) | 👧 Girl | English | — |
| Sinéad | Jane; God is gracious | 👧 Girl | Irish | — |
| Sinem | My heart; My bosom | 👧 Girl | Turkish | — |
| Sinenhlanhla | We have luck | 👧 Girl | Zulu | — |
| Sinethemba | We have hope | 🧒 Unisex | Xhosa | — |
| Sini | Blue | 👧 Girl | Finnish | — |
| Sinikka | Blue | 👧 Girl | Finnish | — |
| Sinovuyo | We have joy | 👧 Girl | Xhosa | — |
| Sinta | Sita | 👧 Girl | Sanskrit | — |
| Siobhán | Joan; God is gracious | 👧 Girl | Irish | — |
| Sione | God is gracious (John) | 👦 Boy | Pacific | — |
| Siphamandla | Give us strength | 👦 Boy | Zulu | — |
| Siphe | Give us | 👦 Boy | Xhosa | — |
| Siphelele | We are complete | 👦 Boy | Zulu | — |
| Siphesihle | Beautiful gift | 🧒 Unisex | Zulu | — |
| Siphiwe | We have been given | 🧒 Unisex | Zulu | — |
| Siphiwo | Gift | 👦 Boy | Xhosa | — |
| Sipho | Gift | 👦 Boy | Zulu | — |
| Siphokazi | Great gift | 👧 Girl | Xhosa | — |
| Siphosethu | Our gift | 🧒 Unisex | Xhosa | — |
| Siraj | Lamp; Light | 👦 Boy | Arabic | — |
| Sirajul | Lamp of | 👦 Boy | Bengali | — |