Dau

Dau or DAU may refer to:


 * Club Deportivo Árabe Unido
 * Daily active users, a performance metric for the success of an Internet product
 * Dau (surname)
 * Dau (film), a biography of physicist Lev Landau
 * DAU (project), a cross-sectional cinema and art project
 * Dau, a barangay in Mabalacat, Pampanga, Philippines
 * Dauair (ICAO code), a small, short-lived German airline
 * Da'u County, or Dawu County, in Sichuan, China
 * Daru Airport (IATA code), airport in Daru, Papua New Guinea
 * Defense Acquisition University, a university under the United States Department of Defense located in Fort Belvoir, Virginia