Czumażówka [t͡ʂumaˈʐufka] is a settlement in the administrative district of Gmina Czarna Białostocka, within Białystok County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 4 kilometres (2 mi) south-east of Czarna Białostocka and 20 km (12 mi) north-east of the regional capital Białystok.