| Acronym | Definition |
|---|
| AER | Annual Equivalent Rate |
| AER | Assembly of European Regions |
| AER | Army Emergency Relief |
| AER | Australian Energy Regulator |
| AER | Adler/Sochi (Russia) |
| AER | American Economic Review |
| AER | Alberta Energy Regulator (Alberta, Canada) |
| AER | Association for Education and Rehabilitation of the Blind and Visually Impaired |
| AER | Adverse Event Reporting (pharmaceutical clinical trials) |
| AER | Annual Environmental Report (various locations) |
| AER | Agricultural Economics Research |
| AER | Atmospheric and Environmental Research |
| AER | All Electric Range |
| AER | Allocation Équivalent Retraite |
| AER | Apical Ectodermal Ridge (developmental biology) |
| AER | Advanced Edge Router |
| AER | Attribute Error Rate |
| AER | Authorized Education Reseller |
| AER | Albumin Excretion Rate (medical) |
| AER | Action for Economic Reforms (Philippines) |
| AER | Alliant Energy Resources, Inc. (Wisconsin) |
| AER | Australian Educational Researcher (Australian Association for Research in Education) |
| AER | Alcohol Education and Rehabilitation (Australia) |
| AER | Auditory Evoked Response |
| AER | Acoustic Evoked Response |
| AER | Association of European Radios (Brussels, Belgium) |
| AER | Address-Event Representation (communications protocol for transferring spikes between bio-inspired chips) |
| AER | Academic Evaluation Report |
| AER | Accident Excess Reduction |
| AER | Artisans des Energies Renouvelables (French: Artisans of Renewable Energy) |
| AER | Army in Europe Regulation (US Army) |
| AER | Acceptable Error Rate |
| AER | Agrupacion Espeleologica Ramaliega |
| AER | Adverse Experience Report (various locations) |
| AER | Annual Emissions Report |
| AER | Average Evoked Response |
| AER | Active Error Recovery |
| AER | Alpha Epsilon Rho (college broadcast fraternity) |
| AER | Alteration Equivalent to Repair |
| AER | All England Reports (Law) |
| AER | Air Energy Recovery |
| AER | Annual Earnings Rate |
| AER | Approach End Runway |
| AER | After Engine Room |
| AER | Agence Exécutive pour la Recherche (French: Executive Research Agency; Brussels, Belgium) |
| AER | Advanced Electric Reactor |
| AER | Agri-Energy Roundtable (est. 1980) |
| AER | Association for Education in Radio |
| AER | Alteration Equivalent to a Repair (US Navy) |
| AER | Advance Engineering Release |
| AER | Advanced Exploration Research |
| AER | Assessment and Evaluation Report |
| AER | Acoustic Emission Receiver |
| AER | Appropriate Extent of Remedy |
| AER | Azimuth-Elevation-Range |
| AER | Alteration Engineering Request |
| AER | Automatic Event Recorder |
| AER | Anything Else Robin (Howard Stern) |
| AER | Average Event Rate |
| AER | Allowable Energy Range (physics) |
| AER | Acute Epileptic Reaction (neurology) |
| AER | All-Electric Energy Range |