Bucium (German: Baumdorf; Hungarian: Bucsony) is a commune located in Alba County, Transylvania, Romania.

The commune is situated 10 km (6.2 mi) east of Abrud.

On its territory can be found a Roman castrum, as well as the ancient open-pit mining sites at Ieruga and Gaura Perii.

The Bucium gold deposits are located within the northernmost volcanic belt of the "Golden Quadrilateral," near the Roșia Montană mining town.

His father, the writer Ion Agârbiceanu, served as Greek-Catholic parish priest at the church in Bucium–Șasa village (now Ciuculești).