Wysokie Mazowieckie County is a unit of territorial administration and local government (powiat) in Podlaskie Voivodeship, north-eastern Poland. It came into being on January 1, 1999, as a result of the Polish local government reforms passed in 1998. Its administrative seat and largest town is Wysokie Mazowieckie, which lies 49 kilometres (30 mi) south-west of the regional capital Białystok. The only other towns in the county are Ciechanowiec, lying 27 km (17 mi) south of Wysokie, Szepietowo, 6 km (4 mi) south of Wysokie, and as from 1 January 2011 Czyżew.

Podlaskie Voivodeship is a voivodeship (province) in northeastern Poland. The name of the province refers to the historical region of Podlachia, and part of its territory corresponds to this region. The capital and largest city is Białystok.