AAU most commonly may refer to: Association of American Universities, a selective group of 71 major research universities in North America
AAU may also refer to:
Education Aalborg University, in Denmark Academy of Art University, in San Francisco, California, US Addis Ababa University, in Ethiopia Allied American University, Laguna Hills, California, US Alpen-Adria-University of Klagenfurt, in Austria Anand Agricultural University, in Anand, Gujarat, India Anglo-American University, in Prague, Czech Republic Antillean Adventist University, in Mayagüez, Puerto Rico Assam Agricultural University, in Jorhat, Assam, India Association of African Universities
Healthcare Acute assessment unit, in a UK hospital Acute anterior uveitis, an inflammation of the middle layer of the eye
Other uses AAU, a codon for the amino acid asparagine Abau language, a language of Papua New Guinea Allgemeine Arbeiter-Union – Einheitsorganisation, a German communist organisation Alpha acid unit, a measure of the bitterness of hops used in brewing beer Amateur Athletic Union, an amateur sports organization in the US Amendment to allege use, a legal term Assigned amount units, emission allowances created and allocated under the Marrakech Accords of the Kyoto protocol Americanos U.S.A., an American bus company Asau Airport in Vaisigano District, Samoa (IATA airport code AAU)