Kozelshchyna Raion

Kozelshchyna Raion (; translit.: "Kozelshchynskyi raion") was a raion (district) in Poltava Oblast in central Ukraine. The raion's administrative center wais the urban-type settlement of Kozelshchyna. The other urban-type settlement in the raion was Nova Haleshchyna (). The raion was abolished on 18 July 2020 as part of the administrative reform of Ukraine, which reduced the number of raions of Poltava Oblast to four. The last estimate of the raion population was 
Important rivers within the Kozelshchyna Raion include the Psel.