| Name | Gender | Origin |
|---|
| Nal | Boy | Indian, Norwegian |
| Nanna | Girl | English, Hebrew, Indian, Norse, Norwegian |
| Nikolaus | Boy | Finnish, German, Norwegian |
| Nils | Boy | Norwegian |
| Njord | Boy | Norwegian |
| Odd | Boy | Norwegian |
| Oddmund | Boy | Norwegian |
| Ola | Unisex | Hawaiian, Norwegian, Polish |
| Olaf | Boy | Norwegian, Polish |
| Olav | Boy | Norwegian |
| Ole | Boy | Norwegian |
| Oliver | Boy | English, Finnish, French, Indian, Norwegian |
| Olivia | Girl | English, Indian, Norwegian, Portuguese, Spanish |
| Oscar | Boy | English, Indian, Norwegian, Portuguese |
| Oskar | Boy | Norwegian |
| Otto | Boy | Finnish, German, Hungarian, Norwegian |
| Ove | Boy | Norwegian |
| Oystein | Boy | Norwegian |
| Oyvind | Boy | Norwegian |
| Pal | Unisex | Hungarian, Indian, Norwegian |
| Paul | Boy | Biblical, English, French, Hungarian, Indian, Norwegian, Scottish |
| Paula | Girl | English, Finnish, Indian, Latin, Norwegian, Polish, Spanish |
| Pauline | Girl | English, French, Indian, Norwegian |
| Peder | Boy | Danish, Norwegian |
| Peer | Boy | German, Norwegian |
| Per | Boy | German, Norwegian |
| Peter | Boy | Biblical, English, Hungarian, Indian, Norwegian |
| Petra | Girl | Bulgarian, English, Finnish, Greek, Indian, Latin, Norwegian |
| Petter | Boy | Norwegian |
| Philip | Boy | English, French, Indian, Norwegian |
| Ragna | Girl | Norwegian, Scandinavian |
| Ragnhild | Girl | Norwegian, Scandinavian |
| Rebekka | Girl | Danish, German, Norwegian |
| Regina | Girl | English, Indian, Latin, Lithuanian, Norwegian, Polish, Spanish |
| Roald | Boy | German, Norwegian |
| Robert | Boy | English, French, German, Indian, Norwegian, Russian |
| Rosa | Girl | Bulgarian, English, German, Indian, Italian, Latin, Norwegian, Polish, Portuguese, Spanish |
| Rosemarie | Girl | English, French, German, Indian, Norwegian, Spanish |
| Rudolf | Boy | German, Hungarian, Norwegian, Polish |
| Runa | Girl | Indian, Norwegian, Scandinavian |
| Rune | Boy | German, Norwegian |
| Ruth | Girl | Biblical, English, Hebrew, Indian, Italian, Norwegian |
| Samuel | Boy | Biblical, English, Finnish, French, Hebrew, Hungarian, Indian, Norwegian, Polish, Portuguese, Spanish |
| Sander | Boy | Dutch, English, Indian, Norwegian |
| Sara | Girl | Arabic, English, Greek, Hebrew, Hungarian, Indian, Italian, Latin, Norwegian, Persian (Iranian), Polish, Scandinavian, Spanish |
| Sebastian | Boy | English, Finnish, Indian, Norwegian, Polish, Spanish |
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