Gnojenko [ɡnɔˈjɛnkɔ] is a village in the administrative district of Gmina Działdowo, within Działdowo County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 9 kilometres (6 mi) south-west of Działdowo and 73 km (45 mi) south-west of the regional capital Olsztyn.