Grzęzienko [ɡʐɛ̃ˈʑɛnkɔ] (German: Weitenhagen) is a village in the administrative district of Gmina Dobra, within Łobez County, West Pomeranian Voivodeship, in north-western Poland. It lies approximately 4 kilometres (2 mi) south-west of Dobra, 25 km (16 mi) west of Łobez, and 48 km (30 mi) east of the regional capital Szczecin.