Lokachi Raion was a raion in Volyn Oblast in western Ukraine. Its administrative center was the urban-type settlement of Lokachi. The raion was abolished and its territory was merged into Volodymyr-Volynskyi Raion on 18 July 2020 as part of the administrative reform of Ukraine, which reduced the number of raions of Volyn Oblast to four. The last estimate of the raion population was 21,586