Mławka [ˈmwafka] is a village in the administrative district of Gmina Iłowo-Osada, within Działdowo County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 5 kilometres (3 mi) south-east of Iłowo-Osada, 15 km (9 mi) south-east of Działdowo, and 73 km (45 mi) south of the regional capital Olsztyn.