AABN or AABn may refer to: Anti-Apartheid Beweging Nederland, a Dutch anti-apartheid movement that was active in the 1960s African Aurora Business Network, an African enterprise development NGO Several military units of the United States Marine Corps: 2nd Assault Amphibian Battalion 3rd Assault Amphibian Battalion 4th Assault Amphibian Battalion Assault Armor Battalion, a military unit of the Philippine Marine Corps