Kaki-Mroczki (Polish pronunciation: [ˈkakʲi ˈmrɔt͡ʂkʲi]) is a village in the administrative district of Gmina Krzynowłoga Mała, within Przasnysz County, Masovian Voivodeship, in east-central Poland. It lies approximately 13 kilometres (8 mi) north of Przasnysz and 102 km (63 mi) north of Warsaw.

During Nazi Occupation it was part of New Berlin military training area