Eau

Eau or EAU may refer to:


 * The French word for water
 * Eau (trigraph), a trigraph of the Latin script
 * EAU, the IATA code for the Chippewa Valley Regional Airport in Wisconsin, United States
 * East Africa University, a private university in Puntland, Somalia
 * El Asher University, an undergraduate university in the Sharqia Governorate, Egypt
 * Emergency assessment unit (EAU), a short-stay department in a hospital
 * Estimated annual usage (EAU)
 * European Association of Urology, a non-profit organisation of urology professionals
 * Initiative: Eau, an American nonprofit, non-governmental organization
 * River Eau, a tributary of the River Trent in Lincolnshire, England
 * Uganda, license plate code