Beniarbeig is a municipality in the comarca of Marina Alta, within the Valencian Community of Spain. It is located in the eastern part of the country, in the province of Alicante, in a region commonly known as the Valencia region.
The town sits in the Marina Alta comarca, an area of the northern Alicante province that stretches along the Mediterranean coast and into the surrounding hills. Like other municipalities in the Valencian Community, Beniarbeig is administered as a local entity within Spain's system of autonomous communities.
Beniarbeig is one of the smaller settlements of the Marina Alta, a comarca whose principal town is Dénia. The municipality shares the Valencian Community's official bilingual status, with both Spanish and Valencian recognised in the region.