Sienno [ˈɕɛnnɔ] (German: Kurtsdorf) is a village in the administrative district of Gmina Resko, within Łobez County, West Pomeranian Voivodeship, in north-western Poland. It lies approximately 10 kilometres (6 mi) south-west of Resko, 24 km (15 mi) north-west of Łobez, and 60 km (37 mi) north-east of the regional capital Szczecin.

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