NAAA may refer to:
Science and technology N-acylethanolamine acid amidase an enzyme encoded by the gene NAAA in humans 5-nitroanthranilic acid aminohydrolase an enzyme found in certain bacteria
Sports National Association of Amateur Athletes of America Nepal Athletics Association formerly called Nepal Amateur Athletics Association (NAAA) Nevis Amateur Athletic Association Naval Academy Athletic Association (see Navy Midshipmen for related topics)
Other National Association of Arab-Americans National Academy of Audit and Accounts, a training facility for the Indian Audit and Accounts Service National Airmen's Association of America (see Coffey School of Aeronautics#Civilian Pilot Training Program) Non-ASEAN Member States Ambassadors to ASEAN, a legal term used in the ASEAN charter naʼá̱á̱ an Apache word meaning older brother