ADU or Adu may refer to:
Universities Abu Dhabi University Adamson University of Manila Afghan Defense University, now called Marshal Fahim National Defense University Animal Demography Unit, University of Cape Town ArsDigita University at MIT
Other uses Adu (surname), with a list of people of that name Adú, 2020 Spanish film Ädu, village in Otepää Parish, Valga County, Estonia Accessory dwelling unit or secondary suite Ammonium diuranate, in yellowcake production Analog-to-digital converter or Analog-to-digital unit Application discovery and understanding, for software maintenance Ardabil Airport in Ardabil Province, Iran (IATA airport code ADU)