Ihor Valeriyovych Kolomoyskyi (Ukrainian: Ігор Валерійович Коломойський, romanized: Ihor Valeriiovych Kolomoiskyi; Hebrew: איגור קולומויסקי; born 13 February 1963) is a Ukrainian-born Israeli billionaire businessman, once considered the leading oligarch in Ukraine.
Already an entrepreneur in the last years of Soviet Ukraine, in 2010 Kolomoyskyi was rated as the second richest person in Ukraine, and as one of the country's most influential oligarchs. In 1992, he had co-founded PrivatBank and its informal stable of companies, Privat Group. He subsequently acquired extensive media holdings. From 2014 till 2016, Kolomoyskyi served as Governor of Dnipropetrovsk Oblast until his dismissal by President Petro Poroshenko. That year, his undercapitalised bank was declared a threat to Ukraine's financial security and taken into state ownership. In 2019, Kolomoyskyi's media power and funding supported Volodymyr Zelenskyy's successful presidential campaign to unseat Poroshenko.
