Airline Superintendents Association, of Trinidad & Tobago Airservices Australia, air traffic management and related services provider for Australia The International Civil Aviation Organization's code for Alaska Airlines Other ASA, a measure of film speed in photography, later replaced by the ISO standard Acrylonitrile styrene acrylate, a plastic polymer Adaptive simulated annealing, optimization algorithm Cisco ASA (Adaptive Security Appliances) Allied States of America, a fictional American nation in the television show Jericho Allmennaksjeselskap, the designation for a Norwegian public limited company Anti-Soviet agitation, a criminal offense in the Soviet Union ASA carriage control characters, a system used for controlling mainframe line printers Assistant state's attorney, a title for attorneys working in the state's attorney's office in the United States As-salamu alaykum, a greeting in Arabic that means "peace be upon you" Auditory scene analysis, a proposed model for the basis of auditory perception See also Åsa (disambiguation)