Koszarsko [kɔˈʂarskɔ] is a village in the administrative district of Gmina Żółkiewka, within Krasnystaw County, Lublin Voivodeship, in eastern Poland. It lies approximately 6 kilometres (4 mi) south of Żółkiewka, 27 km (17 mi) south-west of Krasnystaw, and 47 km (29 mi) south-east of the regional capital Lublin.