Región Autónoma del Atlántico Norte (Spanish for "North Atlantic Autonomous Region"), sometimes shortened to RAAN, is one of two autonomous regions in Nicaragua. It covers an area of 32,159 km² and has a population of 249,700 (2005 census). It is the largest autonomous region or department in Nicaragua. The capital is Puerto Cabezas.
The RAAN has a Regional Council made up of representatives of different political parties (such as the Sandinistas (FSLN), YATAMA (ethnic indigenous party), and others) as well as all the municipalities. They hold sessions in an Assembly in Puerto Cabezas.
The RAAN, in addition to Mestizos contains populations from different indigenous groups, including the Miskitos, Mayagnas, and Creoles.