Kazanka Raion (Ukrainian: Казанківський район) was a subdivision of Mykolaiv Oblast of Ukraine.

Its administrative center was the urban-type settlement of Kazanka.

In 1925, the governorates were abolished, and okruhas were directly subordinated to Ukrainian SSR.

In 1967, Kazanka was granted urban-type settlement status.

[4] At the time of disestablishment, the raion consisted of two hromadas,[5]