Kumielsk [ˈkumʲɛlsk] is a village in the administrative district of Gmina Biała Piska, within Pisz County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 10 kilometres (6 mi) south-west of Biała Piska, 15 km (9 mi) south-east of Pisz, and 102 km (63 mi) east of the regional capital Olsztyn.