Ivan Stepanovych Mazepa (Old Ukrainian: Іоан(ъ) / Іван(ъ) Мазепа; Ukrainian: Іван Степанович Мазепа; Polish: Jan Mazepa-Kołodyński; 30 March [O.S. 20 March] 1639 – 2 October [O.S. 21 September] 1709) was the Hetman of the Zaporozhian Host and the Left-bank Ukraine in 1687–1708. The historical events of Mazepa's life have inspired many literary, artistic and musical works. He was famous as a patron of the arts.
Mazepa played an important role in the Battle of Poltava (1709), where after learning that Tsar Peter I intended to relieve him as acting hetman of Zaporozhian Host and to replace him with Alexander Menshikov, he defected from his army and sided with King Charles XII of Sweden. The political consequences and interpretation of this defection have resonated in the national histories both of Russia and of Ukraine.