| Sigrun | - | Norse Name | Sigune | - | Arthurian Name |
| Sigurbjörg | - | Icelandic Name | Sigurbjörg Lilja | - | Icelandic Name |
| Sigurbjörg Sól | - | Icelandic Name | Sigurfriður | - | Icelandic Name |
| Sigurlaug | - | Icelandic Name | Sigvor | - | Norse Name |
| Sigyn | - | Icelandic Name | Siham | - | Muslim Name |
| Sihor | - | Biblical Name | Sihu | - | American Name |
| Sikata | - | Indian Name | Sikata | - | Hindu Name |
| Sikta | - | Indian Name | Siku | - | Eskimo Name |
| Sila | - | Danish Name | Silak | - | Eskimo Name |
| Silamiksak | - | Eskimo Name | Silauraq | - | Eskimo Name |
| Sile | - | Gaelic Name | Silivia | - | Polynesian Name |
| Silla | - | Biblical Name | Siloa, Siloam, Siloe | - | Biblical Name |
| Silu | - | Eskimo Name | Silvana | - | Latin Name |
| Silvanna | - | Latin Name | Silveria | - | Philippines Name |
| Silvia | - | Romanian Name | Sílvia | - | Portuguese Name |
| Sima | - | Scottish Name | Simay | - | Turkish Name |
| Simbala | - | Hindu Name | Simche | - | Yiddish Name |
| Simi | - | Hindu Name | Simina | - | Assyrian Name |
| Simona | - | Romanian Name | Simone | - | French Name |
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