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.

)[3] At the time of disestablishment, the raion consisted of two hromadas, Chornobai settlement hromada with the administration in Chornobai and Irkliiv rural hromada with the administration in the selo of Irkliiv.

[4] Chornobay Raion covered an area of 1,554 km2 — (600 sq mi).