Cobia is a commune in Dâmbovița County, Muntenia, Romania. It is composed of ten villages: Blidari, Călugăreni, Căpșuna, Cobiuța, Crăciunești, Frasin-Deal, Frasin-Vale, Gherghițești (the commune center), Mănăstirea, and Mislea.

The commune is situated in the Wallachian Plain, on the banks of the river Cobia. It is located in the central-west part of the county, 10 km (6.2 mi) north of the town of Găești and 20 km (12 mi) southwest of the county seat, Târgoviște.

• Ion Dincă (1928 – 2007), communist politician and Army general