| Nadja | | NAHT-yah (German) | German, Slovene | |
| Nastja | | - | Slovene | |
| NataŠA | | - | Serbian, Croatian, Slovene, Macedonian | |
| Natalija | | - | Serbian, Croatian, Slovene, Macedonian | |
| NeŽA | | - | Slovene | |
| Neja | | - | Slovene | |
| Nejc | | - | Slovene | |
| Nevenka | | - | Croatian, Serbian, Slovene | |
| Nik | | - | English, Greek, Slovene | |
| Nika (2) | | - | Slovene, Croatian | |
| Niko | | NEE-ko (Finnish) | Finnish, Croatian, Slovene | |
| Nikola (1) | | - | Serbian, Croatian, Slovene, Bulgarian, Macedonian, Hungarian, Czech, Basque, Medieval Slavic | |
| Nikolaj | | - | Danish, Slovene | |
| Nina (1) | | NEE-nah (Russian, Italian, German, Finnish, Polish), NEE-nə (English) | Russian, Italian, English, German, French, Swedish, Norwegian, Danish, Finnish, Dutch, Polish, Slove | |
| OŽBalt | | - | Slovene | |