Gmina Osieck
Gmina Osieck is an urban-rural gmina in Otwock County, Masovian Voivodeship, in east-central Poland. Its seat is the town of Osieck, which lies approximately south-east of Otwock and south-east of Warsaw.
The gmina covers an area of, and as of 2006 its total population is 3,436.
The gmina contains part of the protected area called Masovian Landscape Park.