Osnówka [ɔsˈnufka] is a village in the administrative district of Gmina Perlejewo, within Siemiatycze County, Podlaskie Voivodeship, in north-eastern Poland.

[1] It lies approximately 5 kilometres (3 mi) south-west of Perlejewo, 26 km (16 mi) north-west of Siemiatycze, and 78 km (48 mi) south-west of the regional capital Białystok.

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