Ossa  is a village in the administrative district of Gmina Odrzywół, within Przysucha County, Masovian Voivodeship, in east-central Poland. It lies approximately  west of Odrzywół,  north-west of Przysucha, and  south-west of Warsaw.

During the January Uprising, on July 10, 1863, it was the site of the Battle of Ossa, in which Polish insurgents led by General Ludwik Żychliński defeated Russian troops.

References

Villages in Przysucha County