Stara Grzybowszczyzna [ˈstara ɡʐɨbɔfʂˈt͡ʂɨzna] is a village in the administrative district of Gmina Krynki, within Sokółka County, Podlaskie Voivodeship, in north-eastern Poland, close to the border with Belarus. It lies approximately 10 kilometres (6 mi) south-west of Krynki, 26 km (16 mi) south-east of Sokółka, and 37 km (23 mi) east of the regional capital Białystok.