Kryve Ozero Raion (Ukrainian: Кривоозерський район) was a subdivision of Mykolaiv Oblast of Ukraine.

Its administrative center was the urban-type settlement of Kryve Ozero.

In 1923, uyezds in Ukrainian Soviet Socialist Republic were abolished, and the governorates were divided into okruhas.

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

In February 1954, Kryve Ozero Raion was transferred to Mykolaiv Oblast.