Janowski (feminine: Janowska; plural: Janowscy) is a Polish surname. It is related to a number of surnames in other languages.
| Language | Masculine | Feminine |
|---|---|---|
| Polish | Janowski | Janowska |
| Belarusian (Romanization) | Яноўскі (Yanouski, Janoŭski, Yanowski) | Яноўская (Yanouskaya, Janoŭskaja, Yanowskaya) |
| Bulgarian (Romanization) | Яновски (Yanovski, Janovski) | Яновска (Yanovska, Janovska) |
| Czech/Slovak | Janovský | Janovská |
| Hungarian | Janovszky, Janovszki, Janowszky | |
| Latvian | Janovskis | |
| Lithuanian | Janauskas | Janauskienė (married) Janauskaitė (unmarried) |
| Macedonian | Јановски (Janovski) | Јановска (Janovska) |
| Romanian/Moldovan | Ianovschi, Ianovschii | |
| Russian (Romanization) | Яновский (Yanovskiy, Yanovsky, Ianovskii, Ianovski, Janovskij) | Яновская (Yanovskaya, Yanovskaia, Ianovskaia, Janovskaja) |
| Ukrainian (Romanization) | Яновський (Yanovskyi, Yanovskyy, Yanovsky Ianovskyi, Janovskyj) | Яновська (Yanovska, Ianovska, Janovska) |
| Other | Janowsky, Janofsky, Yanowsky, Yanovski, Yanofski, Yanofsky |