Kalanchak Raion (Ukrainian: Каланчацький район) was one of the 18 administrative raions (a district) of Kherson Oblast in southern Ukraine.

Its administrative center was located in the urban-type settlement of Kalanchak.

The raion was abolished on 18 July 2020 as part of the administrative reform of Ukraine, which reduced the number of raions of Kherson Oblast to five.

[1][2] The last estimate of the raion population was 21,032 (2020 est.

)[3] At the time of disestablishment, the raion consisted of two hromadas:[4]