| Acronym | Definition |
|---|
| DEA | Drug Enforcement Administration (US Department of Justice) |
| DEA | Drug Enforcement Agency (various organizations; not to be confused with the US Drug Enforcement Administration) |
| DEA | Domestic Energy Assessor (UK) |
| DEA | Data Envelopment Analysis |
| DEA | Diethanolamine |
| DEA | David Evans and Associates, Inc (Portland, OR) |
| DEA | Dependents' Educational Assistance Program |
| DEA | Data Encryption Algorithm |
| DEA | Draft Environmental Assessment |
| DEA | Digital Economy Act (UK) |
| DEA | Department of Economic Affairs (India) |
| DEA | Designated Examining Authority (finance) |
| DEA | Division of Extramural Activities |
| DEA | Development Education Association (London, UK) |
| DEA | Drilling Engineering Association |
| DEA | Dance Educators of America |
| DEA | Department of Elder Affairs |
| DEA | Dissociative Electron Attachment |
| DEA | Data Exchange Agreement |
| DEA | Differential Evolution Algorithm |
| DEA | Diakonie Emergency Aid |
| DEA | Disposable E-mail Address |
| DEA | Direct Electronic Access |
| DEA | Distinguished Educator Award |
| DEA | Davis Education Association |
| DEA | Detective's Endowment Association |
| DEA | Data Exchange Annex |
| DEA | Drink Every Afternoon |
| DEA | Dominant Economic Activities (Master of Orion III; video game) |
| DEA | Detector Electronics Assembly |
| DEA | Distributed Evolutionary Algorithm |
| DEA | Differential Educational Achievement (sociology) |
| DEA | Distributed Enforcement Architecture (Sonicwall) |
| dea | aerospace drift error (US DoD) |
| DEA | Division of Environmental Affairs |
| DEA | Dell-Elmedlaoui Algorithm |
| DEA | Deus Ex Assassins (gaming clan) |
| DEA | Direct Eigenspace Assignment |
| DEA | Downtown Everett Association |
| DEA | Défibrillateur Cardiaque Entièrement Automatique (French: Fully Automatic Cardiac Defibrillator) |
| DEA | Double-Element Antenna |
| DEA | Design and Environmental Analy |
| DEA | Double-Electrode Applicator |
| DEA | Development and Environment Association (Baladna Cultural Center) |
| DEA | Directly Earthed Appliances |
| DEA | Director Enterprise Architecture |
| DEA | Driver Evaluation Assembly |
| DEA | Directeurs d'Etudes Associés (French: Associate Director of Studies) |
| DEA | Distinguished Engineering Alumni (various schools) |
| DEA | Diplôme d'Etudes Approfondies (French: Diploma of Advanced Studies; various locations) |
| DEA | Diploma de Estudios Avanzados (Spanish: Diploma of Advanced Studies) |
| DEA | Droit Économie Administration (French: Law Economics Administration) |
| DEA | Diplôme d'Etat d'Ambulancier (French ambulance driver certification) |
| DEA | Dardilly Environnement et Avenir (French: Dardilly Environment and Future) |
| DEA | Discovery Educator Abroad |