AER

AER or Aer may refer to:

• Aër, a liturgical item in the Greek Orthodox Church
• Aer (album), an album by Swiss pianist and composer Nik Bärtsch's band Mobile
• Aer language
• Air (classical element), in Greek mythology
• Eastern Arrernte language (ISO-639: aer)
• Aer (band), a hip-hop band

Business and organizations

• A.E.R. (automobile), a French former car manufacturer
• AER (motorcycles), a British motorcycle manufacturer
• Action For Economic Reforms, a public-interest research organization in the Philippines
• Advanced Engine Research, an endurance racing car engine manufacturer
• Agri-Energy Roundtable, a non-governmental organization accredited by the United Nations
• Annual Equivalent Rate, as used in the UK
• Army Emergency Relief
• Assembly of European Regions, an independent network of European Regions
• Australian Energy Regulator

Science and technology

• Aerides, an orchid genus, abbreviated Aer
• Agranular endoplasmic reticulum, a cell organelle
• All-electric range, the driving range of a vehicle using only electrical energy for propulsion
• Apical ectodermal ridge, critical component of vertebrate limb development

Journalism

• All England Law Reports, covering the court system in England and Wales
• American Economic Review

Places

• Aer (Sendai), a skyscraper in Japan
• Sochi International Airport, Russia (IATA airport code)

Finance

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