AER

AER or Aer may refer to:

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AviationEdit

Administrative expense ratio, a ratio of general and administrative expenses to total revenue
Annual equivalent rate, a notational interest rate
Average earnings ratio, in stocks

Aer language, an Indo-Aryan language of Pakistan
Eastern Arrernte language, an Arandic dialect cluster of Australia (ISO-639: aer)

Action For Economic Reforms, a public-interest research organization in the Philippines
Advanced Engine Research, an endurance racing car engine manufacturer
A.E.R. (automobile), a French former car manufacturer
AER (motorcycles), a British motorcycle manufacturer
Agri-Energy Roundtable, a non-governmental organization accredited by the United Nations
Alberta Energy Regulator
Algoma Eastern Railway, a former Canadian railway that operated in the province of Ontario
Annual Equivalent Rate, as used in the UK
Army Emergency Relief
Assembly of European Regions, an independent network of European Regions
Atmospheric and Environmental Research, an American scientific research agency owned by Verisk Analytics
Australian Energy Regulator

Address-Event Representation, a coordinate-based data format for sparse events in space-time.
AER: Memories of Old, a 2017 adventure video game developed by Forgotten Key and published by Daedalic Entertainment
All-electric range, the driving range of a vehicle using only electrical energy for propulsion