| Monika | | MO-ni-kah (German), maw-NEE-kah (Polish) | German, Swedish, Norwegian, Danish, Czech, Slovak, Polish, Slovene, Croatian, Lithuanian, Latvian | |
| Nadzieja | | nah-JAY-ah | Polish | |
| Narcyz | | NAHR-tsis | Polish | |
| Natalia | | nah-TAH-lyah (Polish, Italian, Spanish) | Polish, Italian, Spanish, Romanian, Georgian, Late Roman | |
| Natalka | | - | Ukrainian, Polish | |
| Natasza | | nah-TAH-shah | Polish | |
| Nikodem | | nee-KAW-dem | Polish | |
| Nikola (2) | | NEE-ko-lah (German) | German, Polish, Czech, Slovak | |
| Nina (1) | | NEE-nah (Russian, Italian, German, Finnish, Polish), NEE-nə (English) | Russian, Italian, English, German, French, Swedish, Norwegian, Danish, Finnish, Dutch, Polish, Slove | |
| Norbert | | NAWR-bert (German, Polish), NAWR-bərt (English, Dutch) | German, English, Dutch, French, Hungarian, Polish, Ancient Germanic | |
| Ola (2) | | AW-lah | Polish | |
| Olaf | | O-lahf (German, Dutch) | Norwegian, Danish, German, Dutch, Polish | |
| Olek | | AW-lek | Polish | |
| Olga | | OL-gah (Russian), AWL-gah (Polish, German) | Russian, Ukrainian, Polish, German, Swedish, Norwegian, Danish, Icelandic, Latvian, Hungarian, Itali | |
| Olimpia | | aw-LEEM-pyah (Polish) | Italian, Spanish, Romanian, Polish, Hungarian | |