Gmina Górzno is a rural gmina (administrative district) in Garwolin County, Masovian Voivodeship, in east-central Poland. Its seat is the village of Górzno, which lies approximately 8 kilometres (5 mi) south-east of Garwolin and 64 km (40 mi) south-east of Warsaw.
The gmina covers an area of 90.84 square kilometres (35.1 sq mi), and as of 2006 its total population is 6,112.