AER or Aer may refer to:

Aviation

AerCap AerCap Holdings N.V. is an American-Irish aviation leasing company headquartered in Dublin, Ireland, with offices around the world. AerCap is listed on the NYSE with the ticker 'AER'. It became the largest aviation leasing company in the world ...

, an aircraft lessor (NYSE stock symbol AER) *

Aer Lingus Aer Lingus ( ; an anglicisation of the Irish language, Irish , meaning "air fleet") is an Irish airline company which is the flag carrier of Republic of Ireland, Ireland. Founded by the Irish Government, it was privatised between 2006 and 201 ...

, airline from Ireland * IATA airport code for

Sochi International Airport Sochi International Airport (; ) is an international airport located in the Adler District of the resort city of Sochi, on the coast of the Black Sea in the federal subject of Krasnodar Krai, Russia. Sochi International Airport is among the ten ...

in Krasnodar Krai, Russia

Biology

* ''

Aerides ''Aerides'', known commonly as cat's-tail orchids and fox brush orchids, is a genus belonging to the orchid family (Orchidaceae, subfamily Epidendroideae, tribe Vandeae, subtribe Aeridinae). It is a group of tropical epiphyte orchids that gro ...

'', an orchid genus, abbreviated Aer * Agranular endoplasmic reticulum, a cell organelle * Albumin Excretion Rate *

Apical ectodermal ridge The apical ectodermal ridge (AER) is a structure that forms from the ectodermal cells at the distal end of each limb bud and acts as a major signaling center to ensure proper development of a limb. After the limb bud induces AER formation, the AE ...

, critical component of vertebrate limb development

Finance

* Administrative

expense ratio The expense ratio of a stock or asset fund is the total percentage of fund assets used for administrative, management, advertising (12b-1), and all other expenses. An expense ratio of 1% per annum means that each year 1% of the fund's total assets ...

, a ratio of general and administrative expenses to total revenue *

Annual equivalent rate The effective interest rate (EIR), effective annual interest rate, annual equivalent rate (AER) or simply effective rate is the percentage of interest on a loan In finance, a loan is the tender of money by one party to another with an agre ...

, a notational interest rate * Average earnings ratio, in stocks

Languages

Aer language Aer ( ) is an Indo-Aryan language spoken by around 100 people in Sindh, Pakistan and Gujarat, India. It is one of the smallest languages of Pakistan in terms of number of speakers, and is spoken in rural areas of Sindh including Hyderabad, Kot ...

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

Music

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

Aer (band) Aer was an indie US band consisting of David von Mering and Carter Schultz. The duo hail from Wayland, Massachusetts, a small town in the suburbs west of Boston. They first gained popularity with their debut studio album, ''The Bright Side'' in ...

, a hip-hop band

Organizations

Action For Economic Reforms Action for Economic Reforms (AER) is a Philippine non-government organization engaged in research and advocacy. It was founded in 1996 by a group of progressive scholars and activists as an "independent, reform-oriented and activist policy group". ...

, a public-interest research organization in the Philippines *

Advanced Engine Research Advanced Engine Research, Ltd. (commonly known by the abbreviation AER) is an auto racing engine manufacturer based in Basildon, Essex, England. Established in 1997, AER has developed winning engines for a number of high-profile international ra ...

, 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 The Alberta Energy Regulator (AER) is a quasi-judicial, independent agency regulating the development of energy resources in Alberta. Headquartered in Calgary, the AER's mandate under the ''Responsible Energy Development Act'' (REDA) is "to ...

Algoma Eastern Railway The Algoma Eastern Railway was a railway in Northeastern Ontario, Canada. Originally known as the Manitoulin and North Shore Railway (M&NS) with a charter dating back to 1888, the full mainline was opened to traffic in 1913, serving the area al ...

, a former Canadian railway that operated in the province of Ontario *

Annual Equivalent Rate The effective interest rate (EIR), effective annual interest rate, annual equivalent rate (AER) or simply effective rate is the percentage of interest on a loan In finance, a loan is the tender of money by one party to another with an agre ...

, as used in the UK * Army Emergency Relief *

Assembly of European Regions The Assembly of European Regions (AER) is the largest independent network of regions in wider Europe. Bringing together regions from 25 countries and 15 interregional organizations, AER is a forum for interregional cooperation. Historical b ...

, an independent network of European Regions * Atmospheric and Environmental Research, an American scientific research agency owned by

Verisk Analytics Verisk Analytics, Inc. is an American multinational data analytics and risk assessment firm based in Jersey City, New Jersey, with customers in insurance, natural resources, financial services, government, and risk management sectors. The company ...

Australian Energy Regulator The Australian Energy Regulator (AER) is the regulatory authority for the wholesale electricity and gas markets in Australia. The AER is a part of the Australian Competition & Consumer Commission, and enforces the rules established by the Austr ...

Places

* Aer (Sendai), a skyscraper in Japan

Publications

All England Law Reports The All England Law Reports (abbreviated in citations to All ER) are a long-running series of law reports covering cases from the court system in England and Wales. Established in 1936, the All England Law Reports are a commercially produced alte ...

, covering the court system in England and Wales *

American Economic Review The ''American Economic Review'' is a monthly peer-reviewed academic journal first published by the American Economic Association in 1911. The current editor-in-chief is Erzo FP Luttmer, a professor of economics at Dartmouth College. The journal is ...

Religion and mythology

* Aër, a liturgical item in the Greek Orthodox Church *

Air (classical element) Air or Wind is one of the four classical elements along with water, earth and fire in ancient Greek philosophy and in Western alchemy. Greek and Roman tradition According to Plato, it is associated with the octahedron; air is considered to be ...

, 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 All-electric range (AER) is the maximum driving range of an electric vehicle using only power from its on-board battery pack to traverse a given driving cycle. In the case of a Battery electric vehicle (BEV), it means the maximum range per rech ...

, the driving range of a vehicle using only electrical energy for propulsion {{disambiguation