| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Niketas | - | Ancient Greek | ||
| Nikias | - | Ancient Greek | ||
| Nikki | NIK-ee | English | ||
| Nikkole | ni-KOL | English (Rare) | ||
| Niko | NEE-ko (Finnish) | Finnish, Croatian, Slovene | ||
| Nikodemos | - | Ancient Greek, Biblical Greek | ||
| Nikola (1) | - | Serbian, Croatian, Slovene, Bulgarian, Macedonian, Hungarian, Czech, Basque, Medieval Slavic | ||
| Nikolaj | - | Danish, Slovene | ||
| Nikolaos | - | Ancient Greek, Greek | ||
| Nikolas | - | Greek, English | ||
| Nikole | ni-KOL (English) | Basque, English | ||
| Nikomachos | - | Ancient Greek | ||
| Nikomedes | - | Ancient Greek | ||
| Nikon | - | Ancient Greek, Russian | ||
| Nikostratos | - | Ancient Greek |