Wietszyno [vjɛtˈʂɨnɔ] (German Johannesthal) is a former village in the administrative district of Gmina Karlino, within Białogard County, West Pomeranian Voivodeship, in north-western Poland. It lies approximately 10 kilometres (6 mi) north-west of Karlino, 18 km (11 mi) north-west of Białogard, and 106 km (66 mi) north-east of the regional capital Szczecin.

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