Osuchów is a village in the administrative district of Gmina Promna, within Bia obrzegi County, Masovian Voivodeship, in east-central Poland. It lies approximately 9 kilometres (6 mi) west of Promna, 9 km (6 mi) west of Bia obrzegi, and 63 km (39 mi) south of Warsaw. Gmina Promna is a rural gmina (administrative district) in Bia obrzegi County, Masovian Voivodeship, in east-central Poland. Its seat is the village of Promna, which lies approximately 4 kilometres (2 mi) north of Bia obrzegi and 60 km (37 mi) south of Warsaw. The gmina covers an area of 120.74 square kilometres (46.6 sq mi), and as of 2006 its total population is 5,612.