| Nicky | | NIK-ee | English | |
| Nico | | NEE-ko (Italian, Dutch, Spanish) | Italian, Dutch, German, Spanish, Portuguese | |
| Nicodemo | | nee-ko-DE-mo (Italian), nee-ko-DHE-mo (Spanish) | Italian, Spanish, Portuguese | |
| Nicol (1) | | - | Scottish, Medieval English | |
| NicolÁS | | nee-ko-LAHS | Spanish | |
| Nicola (2) | | NIK-ə-lə (English) | German, Czech, English | |
| Nicolao | | - | Spanish | |
| Nicolasa | | nee-ko-LAH-sah | Spanish | |
| Nicolau | | nee-koo-LOW (Portuguese) | Portuguese, Galician, Catalan | |
| Nicole | | nee-KOL (French), ni-KOL (English) | French, English, Dutch, German | |
| Nidia | | - | Spanish | |
| Niels (1) | | NILS | Danish | |
| Nienke | | NEEN-kə | Frisian | |
| Nieve | | - | Spanish | |
| Nieves | | NYE-ves | Spanish | |