Unia is an album by Sonata Arctica.

Unia may also refer to:

Unia, Greater Poland Voivodeship, a village in west-central Poland Unia (union) a Swiss trade union UNIA, short for the Universal Negro Improvement Association and African Communities League Unia or Uniates, a name given to the Eastern Catholic Churches UNIA, short of the International University of Andalucía, a Spanish public University in Andalusia Unia, the Belgian Centre for Equal Opportunities