L'Atzúbia or Adsubia is a municipality in the comarca of Marina Alta in the north of the province of Alicante, in the Valencian Community, Spain.It is enclaved in the Pego Valley. The neighbouring municipalities are: Vilallonga and Oliva to the north, Oliva and Pego to the east, La Vall de Gallinera and Vilallonga to the west; and La Vall de Gallinera and Pego to the south.