Mykola Stsyborsky

Mykola Stsiborskyi (Ukrainian: Микола Сціборський), also may be spelled Stsiborsky, Stsyborsky, Ściborski, or Sciborski (1897 – August 30, 1941) was a Ukrainian nationalist politician who served on the Provid, or central leadership council of the Organization of Ukrainian Nationalists (OUN), and who was its chief theorist. He sided with Andriy Melnyk when the OUN split into two hostile factions, and was likely murdered by followers of Melnyk's rival Stepan Bandera.

Mykola Stsiborskyi was born in Zhytomyr, Volhynian Governorate, Ukraine (then part of the Russian empire) to the family of a tsarist army officer. He grew up in Kiev and served in the army of the Ukrainian People's Republic which had fought to establish an independent Ukrainian state against the Soviet forces during the Russian Civil War. Following the war he emigrated to Prague where he studied economics and engineering, joining the Ukrainian Military Organization and later the Organization of Ukrainian Nationalists. A gifted writer, he became quite influential within the OUN as its principal theorist. Stsiborskyi was one of eight members of the OUN's Provid, or leadership council, that in the 1930s had been based in Rome.

In 1939, while the OUN was preparing for its Second Congress, Stsiborskyi was assisted by Yaroslav Stetsko, a close ally of Stepan Bandera. Stetsko was relieved of his duties by Stsyborsky due to allegations that he was unable to properly fulfill his duties. This act may have contributed to the deterioration between Bandera's followers and the Provid which would lead to the split within the OUN. Prior to the split Bandera's group demanded that Stsiborskyi and two others be removed from the Provid, a demand that was ignored by the OUN leader Andrii Melnyk.

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