This category is for municipalities in the province of Biscay (Basque: Bizkaia, Spanish: Vizcaya), in the autonomous community of the Basque Country.

The country of Spain is administratively divided into seventeen autonomous communities (comunidades autónomas), and five enclaves of sovereignty (plazas de soberanía) on the African coast, which include the two autonomous cities (ciudades autónomas) of Ceuta and Melilla).

These seventeen autonomous communities group together and preserve some fifty Provinces {provincias), which have an older historical formation.

Within each autonomous community/province are numerous local government divisions, or municipalities, generally centered around a city, town, village or rural area.

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