Severyn Nalyvaiko
| Severyn Nalyvaiko | |
|---|---|
| Hetman of Ukrainian Cossacks | |
| In office 1596–1596 | |
| Preceded by | Hryhory Loboda | 
| Succeeded by | Petro Konashevych-Sahaidachny | 
| Personal details | |
| Born | Husiatyn, Kingdom of Poland | 
| Died | 21 April 1597 Warsaw, Poland | 
Severyn (Semerii) Nalyvaiko (Ukrainian: Северин (Семерій) Наливайко, Polish: Seweryn Nalewajko, in older historiography also Semen Nalewajko, died 21 April 1597) was a leader of the Ukrainian Cossacks who became a hero of Ukrainian folklore. He led the failed Nalyvaiko Uprising against the Polish–Lithuanian Commonwealth for which he was tortured and executed in Warsaw. The Decembrist poet Kondraty Ryleyev wrote a poem about him.