Asturian Nationalist Unity (Asturian language: Unidá Nacionalista Asturiana, UNA), was a political party in Asturias, Spain, formed by the merger of two previous parties (Ensame Nacionalista Astur and Xunta Nacionalista Asturiana), in 1988.

This generated tensions within UNA, which led to a split of the sector that didn't want a coalition with the PAS in march 1990.

The splitters founded two new political parties: Asturian Left and Andecha Astur.

In the local elections CA gained 10,891 votes (2.05% of the total in Asturies) and 6 town representatives (2 in Amieva, 1 in Aller/Ayer, Degaña, Nava and Cangas del Narcea).

Despite this relative success, CA broke in 1992, after a failed attempt to merge the two parties.