Vulcana-Băi is a commune in Dâmbovița County, Muntenia, Romania with a population of 2,934 people as of 2021. It is composed of three villages: Nicolaești, Vulcana-Băi, and Vulcana de Sus.

The commune is located in the northern part of the county, 22 km (14 mi) away from the county seat, Târgoviște.

The Orthodox Bunea Monastery [ro], founded in 1654, is situated on the territory of the commune.