Chornobai Raion (Ukrainian: Чорнобаївський район) was a raion (district—administrative region) of eastern Cherkasy Oblast, in central Ukraine. Its administrative center was located in the urban-type settlement of Chornobai. The raion was abolished on 18 July 2020 as part of the administrative reform of Ukraine, which reduced the number of raions of Cherkasy Oblast to four. The area of Chornobai Raion was merged into Zolotonosha Raion.[1][2] The last estimate of the raion population was 39,346 (2020 est.)[3]