Alca
# Alca

Alca may refer to:

* Advanced Light Combat Aircraft; see Aero L-159 Alca
* Alca, a genus of birds
* Apostolic Lutheran Church of America
* The Free Trade Area of the Americas, known as Área de Libre Comercio de las Américas in Spanish, and Área de Livre Comércio das Américas in Portuguese
* The Professional Landcare Network, previously known as the Associated Landscape Contractors of America
