AER

AER or Aer may refer to:

Biology

 * Aerides, an orchid genus, abbreviated Aer
 * Agranular endoplasmic reticulum, a cell organelle
 * Apical ectodermal ridge, critical component of vertebrate limb development
 * Albumin Excretion Rate

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

Languages

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

Music

 * Aer (band), a hip-hop band
 * Aer (album), an album by Swiss pianist and composer Nik Bärtsch's band Mobile

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
 * AerCap, an aircraft lessor (NYSE stock symbol AER)
 * Aer Lingus, airline from Ireland
 * 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
 * Atmospheric and Environmental Research, an American scientific research agency owned by Verisk Analytics
 * Army Emergency Relief
 * Assembly of European Regions, an independent network of European Regions
 * Australian Energy Regulator

Places

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

Publications

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

Religion and mythology

 * Aër, a liturgical item in the Greek Orthodox Church
 * Air (classical element), in Greek mythology

Other uses

 * 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