Krzak [kʂak] is a village in the administrative district of Gmina Nielisz, within Zamość County, Lublin Voivodeship, in eastern Poland. It lies approximately 4 kilometres (2 mi) east of Nielisz, 15 km (9 mi) north-west of Zamość, and 63 km (39 mi) south-east of the regional capital Lublin.