Baia de Arieş is a town in Alba County, Romania which encomprises also the villages of Sartăş, Brăzeşti, Muncel, Cioara De Sus and Simuleşti. With a population of 5,065, it was until 2004 a mining centre extracting mainly base metals but also arsenopyrite and pyrite-rich concentrate containing gold.

The first writing about it is in a document of Charles I of Hungary since 1325. In the beginning of the 15th century it was declared free town. It lost this status later, but regained it in 1998.

Baia de Arieş's touristical objectives are the monument of nature tree known as the "Emperor's beech" and the Muncel Monastery.