Ulaski Grzmiąckie [uˈlaski ˈɡʐmjɔnt͡skʲɛ] is a village in the administrative district of Gmina Wyśmierzyce, within Białobrzegi County, Masovian Voivodeship, in east-central Poland. It lies approximately 5 kilometres (3 mi) west of Wyśmierzyce, 15 km (9 mi) west of Białobrzegi, and 69 km (43 mi) south of Warsaw.