| Acronym | Definition |
|---|
| EAO | Éducation a l'Orientation (French: Education Guidance) |
| EAO | Environmental Assessment Office |
| EAO | Enseñanza Asistida Por Ordenador |
| EAO | European Audiovisual Observatory (est. 1992; various locations) |
| EAO | Entity Access Object |
| EAO | Effective Address Overflow Exception |
| EAO | Enseignement Assisté par Ordinateur (French: Computer Assisted Learning) |
| EAO | Egyptian Antiquities Organization (now Supreme Council of Antiquities) |
| EAO | External Affairs Office |
| EAO | Environmental Assistance Office (EU) |
| EAO | Engineering Audit Officer (New York) |
| EAO | Employee Assistance Office |
| EAO | Enseignant Agréé de l'Ontario (French: Teacher Approved Ontario; Ontario, Canada) |
| EAO | Einstein Archives Online (Albert Einstein; Hebrew University of Jerusalem; Israel) |
| EAO | Economic Assessment Office (NIST) |
| EAO | Egyptian Agricultural Organisation |
| EAO | Executive Agent Office |
| EAO | Entretiens Annuels d'Ophtalmologie (French: Annual Ophthalmology Meetings) |
| EAO | Emergency Actions Officer |
| EAO | Électricité Automatisation de l'Ouest (French: Western Power Automation) |
| EAO | Emergency Area Office |
| EAO | Environmental Affairs Office |
| EAO | Enterprise Add-On |
| EAO | Emergency Administrative Order |
| EAO | Economy Act Order |
| EAO | External Abdominal Oblique (muscle) |
| EAO | Entity Access Object (databases) |
| EAO | Equatorial Annual Oscillation |
| EAO | Equipment Accountability Office (US Air Force) |