Wau may refer to: Wau, a fictional alien race in Tenchi Muyo Wau (letter) or digamma, an obsolete Greek alphabet letter Wau, Papua New Guinea Wau, South Sudan, city on the Jur River Wau bulan, a traditional kite in MalaysiaWAU is the abbreviation of: Washington Adventist University, a private Seventh-day Adventist university Windows Anytime Upgrade, an upgrade method offered by Microsoft CorporationSee also WAW (disambiguation)