Zając [ˈzajɔnt͡s] is a village in the administrative district of Gmina Liw, within Węgrów County, Masovian Voivodeship, in east-central Poland. It lies approximately 8 kilometres (5 mi) south of Węgrów and 73 km (45 mi) east of Warsaw.

Before the 1998 local boundary reforms it was administratively part of the Siedlce Voivodeship.