The Russian occupation of Zaporizhzhia Oblast is an ongoing military occupation of Ukraine's Zaporizhzhia Oblast by Russian forces that began on 24 February 2022 during the Russian invasion of Ukraine as part of the southern Ukraine campaign. It was administrated under a Russian-controlled military-civilian administration until 30 September 2022, when it was illegally annexed to become an unrecognized federal subject of Russia.

Military occupation, also called belligerent occupation or simply occupation, is the temporary control exerted by a ruling power's military apparatus over a sovereign territory that is outside of the legal boundaries of that ruling power's own sovereign territory. The controlled territory is then known as the occupied territory, with the ruling power being the occupant. Occupation is distinguished from annexation and colonialism on the basis that it is a power structure that the ruling power intends to keep in place only temporarily. In many cases, the occupant may establish a military government to facilitate the administration of the occupied territory, though this is not a necessary precondition for occupation to take place.