| Sindre | | - | Norwegian | |
| Siri | | SEE-ree (Swedish) | Swedish, Norwegian, Danish | |
| Siv | | SEEV | Swedish, Norwegian, Danish, Norse Mythology | |
| Sjurd | | - | Norwegian | |
| Snorre | | - | Norwegian | |
| Sofia | | zo-FEE-ah (German), so-FEE-ah (Italian), soo-FEE-ə (Portuguese), SO-fee-ah (Finnish) | Norwegian, Swedish, German, Italian, Portuguese, Catalan, Greek, Finnish, Estonian, Slovak, Romanian | |
| Solfrid | | - | Norwegian | |
| Solveig | | SOOL-vie (Norwegian), SOOL-vay (Swedish) | Norwegian, Swedish | |
| Sonja | | ZAWN-yah (German), SON-yah (Finnish) | German, Dutch, Swedish, Norwegian, Danish, Icelandic, Finnish, Slovene, Serbian, Croatian, Macedonia | |
| Stefan | | SHTE-fahn (German), STAY-fahn (Dutch), STE-fahn (Polish) | German, Swedish, Norwegian, Danish, Dutch, Polish, Bulgarian, Macedonian, Serbian | |
| Steffen | | SHTE-fen (Low German) | Low German, Danish, Norwegian, Dutch | |
| Stein | | - | Norwegian | |
| Steinar | | - | Norwegian | |
| Sten | | - | Swedish, Danish, Norwegian, Dutch | |
| Stian | | - | Norwegian | |