EAU may refer to:
- Eurasian Union
- Unified Team of Germany, French Équipe Unifiée d'Allemagne; retrospective code for 1956–64 German Olympic teams
- Chippewa Valley Regional Airport, whose IATA airport code is EAU
- East Africa University, Bosaso, Somalia
- European Association of Urology
- European Americans United
- Estimated Annual Usage
- Emergency Assessment Unit, another name for the Acute assessment unit
Read more about Eau: Colleges and Universities