AAG may stand for:

• Acute angle closure glaucoma
• Aeromedical Airlift Group
• Affirmative Action Group (Zimbabwe)
• Alberta Association on Gerontology
• Anti-aircraft gun
• Army Artillery Group
• AS/400 Advocacy Group (computing)
• Asociación Argentina de Golf (aag.com.ar)
• Asociación Audubon de Guatemala
• Assistant Adjutant General
• Assistant Attorney General
• Association of American Geographers (aag.org)
• Association of Applied Geochemists
• Australian Association of Gerontology

AAG was also the name of two German automotive companies:

• AAG (1900 automobile)
• AAG (1906 automobile)