Mroz or Mróz is a surname. Cognate to Maroz, Moroz and Mraz, it means "frost" in Polish. It is most frequent in southern and eastern Poland.
| Language | Masculine | Feminine |
|---|---|---|
| Mróz | ||
| Belarusian (Romanization) | Belarusian: Мароз (Maroz) | |
| Mrázová | ||
| Russian (Romanization) | Russian: Мороз (Moroz) | |
| Mrázová | ||
| Ukrainian (Romanization) | Ukrainian: Мороз (Moroz) |