Opalenie [ɔpaˈlɛɲɛ] is a village in the administrative district of Gmina Gniew, within Tczew County, Pomeranian Voivodeship, in northern Poland. It lies approximately 11 kilometres (7 mi) south of Gniew, 41 km (25 mi) south of Tczew, and 71 km (44 mi) south of the regional capital Gdańsk.

In 2013 a road bridge across the Vistula was opened as part of national road route 90 from Jeleń to Baldram. The bridge, connecting Opalenie to Kwidzyn, is the longest extradosed bridge in Europe and replaced the previous crossing via reaction ferry from Gniew to Janowo.

The first mention of the village in historical sources dates back to 1365 in which it was named Opalin.

By the 18th century the village and surrounding farmland belonged to the Czapski family. In 1773 the Czapski's commissioned the baroque church of the Saints Peter and Paul.

In 1812 Napoleon Bonaparte spent a night in the village.