Kierzbuń [ˈkʲɛʐbuɲ] is a village in the administrative district of Gmina Barczewo, within Olsztyn County, Warmian-Masurian Voivodeship, in northern Poland.^[1]

Kierzbuń is approximately 12 kilometres (7 mi) east of Barczewo and 24 km (15 mi) east of the regional capital Olsztyn.