Gmina Czarnia
Gmina Czarnia is a rural gmina in Ostrołęka County, Masovian Voivodeship, in east-central Poland. Its seat is the village of Czarnia, which lies approximately north-west of Ostrołęka and north of Warsaw.
The gmina covers an area of, and as of 2006 its total population is 2,620.