Wycześniak [vɨˈt͡ʂɛɕɲak] is a village in the administrative district of Gmina Puszcza Mariańska, within Żyrardów County, Masovian Voivodeship, in east-central Poland. It lies approximately 7 kilometres (4 mi) south of Puszcza Mariańska, 16 km (10 mi) south-west of Żyrardów, and 57 km (35 mi) south-west of Warsaw.