Mroczki Wielkie (Polish pronunciation: [ˈmrɔt͡ʂkʲi ˈvjɛlkʲɛ]) is a village in the administrative district of Gmina Szczytniki, within Kalisz County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 8 kilometres (5 mi) north-east of Szczytniki, 24 km (15 mi) east of Kalisz, and 127 km (79 mi) south-east of the regional capital Poznań.