Szulmierz [ˈʂulmjɛʂ] is a village in the administrative district of Gmina Regimin, within Ciechanów County, Masovian Voivodeship, in east-central Poland. It lies approximately 7 kilometres (4 mi) north-east of Regimin, 12 km (7 mi) north of Ciechanów, and 87 km (54 mi) north of Warsaw.