Tarnowski (feminine: Tarnowska; plural: Tarnowscy) is a Polish-language toponymic surname derived from the city of Tarnów.
| Language | Masculine | Feminine |
|---|---|---|
| Polish | Tarnowski | Tarnowska |
| Belarusian (Romanization) | Тарнаўскі (Tarnaŭski) Тарноўскі (Tarnoŭski) | Тарнаўская (Tarnauskaya, Tarnaŭskaja, Tarnauskaia) Тарноўская (Tarnouskaya, Tarnoŭskaja, Tarnouskaia) |
| Bulgarian (Romanization) | Търновски (Tarnovski) | |
| Czech/Slovak | Tarnovský | Tarnovská |
| Hungarian | Tarnovszki, Tarnovszky | |
| Latvian | Tarnovskis | Tarnovska |
| Lithuanian | Tarnauskas | Tarnauskienė (married) Tarnauskaitė (unmarried) |
| Romanian/Moldovan | Tarnovschi, Tarnovschii | |
| Russian (Romanization) | Тарновский (Tarnovskiy, Tarnovskii, Tarnovskij, Tarnovsky, Tarnovski) | Тарновская (Tarnovskaya, Tarnovskaia, Tarnovskaja) |
| Ukrainian (Romanization) | Тарновський (Tarnovskyi, Tarnovskyy, Tarnovskyj, Tarnovsky) | Тарновська (Tarnovska) |
| Other | Tarnowsky, Tarnofsky, Tarnofski |