Busk Raion was a raion (district) in Lviv Oblast (region) in western Ukraine. It was established in 1966. Its administrative center was the town of Busk. The raion was abolished on 18 July 2020 as part of the administrative reform of Ukraine, which reduced the number of raions of Lviv Oblast to seven. The area of Busk Raion was merged into Zolochiv Raion. The last estimate of the raion population was 45,934.