Kruczaj [ˈkrut͡ʂai̯] (German: Marienwalde) is a settlement in the administrative district of Gmina Bierzwnik, within Choszczno County, West Pomeranian Voivodeship, in north-western Poland. It lies approximately 3 kilometres (2 mi) north-west of Bierzwnik, 22 km (14 mi) south-east of Choszczno, and 82 km (51 mi) south-east of the regional capital Szczecin.

For the history of the region, see History of Pomerania.