Benifairó de les Valls is a municipality in the comarca of Camp de Morvedre, in the Valencian Community of eastern Spain. It is situated in the province of Valencia, within the wider Valencia region on Spain's Mediterranean coast.
The town lies in the Camp de Morvedre district, a comarca whose administrative centre is the nearby coastal city of Sagunt. Like other municipalities in the area, Benifairó de les Valls forms part of the Valencian Community, an autonomous region with its own distinct language and institutions.
As a municipality, Benifairó de les Valls has its own local administration and is one of the smaller settlements making up the Camp de Morvedre comarca. It is located inland from the Mediterranean coastline, in the northern part of the province of Valencia.