| Mona (2) | | - | Swedish, Norwegian, Danish | |
| Monika | | MO-ni-kah (German), maw-NEE-kah (Polish) | German, Swedish, Norwegian, Danish, Czech, Slovak, Polish, Slovene, Croatian, Lithuanian, Latvian | |
| My | | - | Swedish | |
| Nanna (1) | | NAN-nah (Danish), NAHN-nah (Swedish, Norwegian, Icelandic) | Danish, Swedish, Norwegian, Icelandic, Norse Mythology | |
| Nea | | - | Swedish | |
| Niklas | | NIK-lahs (Swedish), NEEK-lahs (Finnish) | Swedish, Finnish, Danish, Norwegian, German | |
| Nils | | - | Swedish, Norwegian, Danish | |
| Nina (1) | | NEE-nah (Russian, Italian, German, Finnish, Polish), NEE-nə (English) | Russian, Italian, English, German, French, Swedish, Norwegian, Danish, Finnish, Dutch, Polish, Slove | |
| Njord | | - | Norse Mythology, Swedish, Norwegian, Danish | |
| Noak | | - | Swedish | |
| Nora | | NAWR-ə (English), NO-rah (German) | Irish, English, Swedish, Norwegian, Danish, German, Dutch, Italian | |
| Ola (1) | | - | Norwegian, Swedish | |
| Olga | | OL-gah (Russian), AWL-gah (Polish, German) | Russian, Ukrainian, Polish, German, Swedish, Norwegian, Danish, Icelandic, Latvian, Hungarian, Itali | |
| Oliver | | AHL-ə-vər (English), AW-lee-ver (German), O-lee-ver (Finnish) | English, German, Swedish, Norwegian, Danish, Finnish, Estonian, Serbian, Croatian, Macedonian, Czech | |
| Olivia | | ə-LIV-ee-ə (English), o-LEE-vyah (Italian, Spanish), o-LEE-vee-ah (German), O-lee-vee-ah (Finnish) | English, Italian, Spanish, German, Finnish, Swedish, Norwegian, Danish | |