Kostіantyn Doroshenko, Kostyantyn is a Ukrainian art critic, publicist, contemporary art curator, media manager, and radio host. Doroshenko is well known as a cultural and social journalist with works published in Ukraine, Australia, Azerbaijan, and Italy. He is the host of the radio station Radio Vesti. He is a columnist to company Public Culture; is a curator of the Research Platform PinchukArtCentre since 2019; and is the author of the books 'The End of the Late Iron Age' and 'Aria of Mary'. He is one of the most influential Ukrainian art curators and art critics of Ukraine according to Art Ukraine magazine and Focus magazine. He is also a member of the World League "Mind without drugs". On 1 April 2017, Doroshenko was appointed Ambassador Extraordinary and Plenipotentiary of the Republic Užupis among art critics of the world.

Užupis is a neighborhood in Vilnius, the capital of Lithuania, largely located in Vilnius's old town, a UNESCO World Heritage Site. Užupis means "beyond the river" or "the other side of the river" in the Lithuanian language and refers to the Vilnia River; the name Vilnius was derived from the Vilnia. The district has been popular with artists for some time, and has been compared to Montmartre in Paris and to Freetown Christiania in Copenhagen, due to its bohemian and laissez-faire atmosphere. On April 1, 1997, the district declared itself an independent republic, with its own constitution.