Horodok Raion was a raion (district) in Lviv Oblast in western Ukraine. Its administrative center was the city of Horodok. The area of the district was 727 km2. It bordered with Yavoriv, Pustomyty, Mykolaiv, Drohobych, Sambir, and Mostyska raions. 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 Horodok Raion was merged into newly established Lviv Raion. The last estimate of the population of the raion was It was established in 1939. At the time of disestablishment, the raion consisted of three hromadas: