Brzezi Ostrów [ˈbʐɛʑi ˈɔstruf] is a settlement in the administrative district of Gmina Sztum, within Sztum County, Pomeranian Voivodeship, in northern Poland. It lies approximately 4 kilometres (2 mi) west of Sztum and 56 km (35 mi) south-east of the regional capital Gdańsk.

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