| Sindri | | - | Norse Mythology, Ancient Scandinavian, Icelandic | |
| Snorri | | - | Ancient Scandinavian, Icelandic | |
| SoffÍA | | - | Icelandic | |
| Sonja | | ZAWN-yah (German), SON-yah (Finnish) | German, Dutch, Swedish, Norwegian, Danish, Icelandic, Finnish, Slovene, Serbian, Croatian, Macedonia | |
| StefÁN | | - | Icelandic | |
| Svana | | - | Icelandic | |
| Svanhildur | | - | Icelandic | |
| Sverrir | | - | Ancient Scandinavian, Icelandic | |
| TÓMas | | - | Icelandic | |
| TheÓDÓRa | | - | Icelandic | |
| Tryggvi | | - | Icelandic, Ancient Scandinavian | |
| Unnur | | - | Icelandic | |
| ValdÍS | | - | Ancient Scandinavian, Icelandic | |
| VigdÍS | | - | Icelandic | |
| Viktor | | VIK-tawr (German), VEEK-tahr (Russian) | Swedish, Norwegian, Danish, Icelandic, German, Hungarian, Czech, Slovak, Bulgarian, Russian, Ukraini | |