AER or Aer may refer to:
OJSC Aeroflot – Russian Airlines (Russian: ОАО "Аэрофло́т-Росси́йские авиали́нии", OAO Aeroflot-Rossiyskiye avialinii) (MCX: AFLT), commonly known as Aeroflot (English pronunciation: /ˈɛəroʊˌflɒt/ or /ˌɛəroʊˈflɒt/) (Russian: Аэрофлот, English translation: "air fleet", pronounced [ɐɛrɐˈflot]), is the flag carrier and largest airline of the Russian Federation.
Aerosmith is an American rock band, sometimes referred to as "the Bad Boys from Boston" and "America's Greatest Rock and Roll Band".
Aer Lingus, (/ˌɛər ˈlɪŋɡəs/, an anglicisation of the Irish Aer Loingeas meaning "air fleet") is the flag carrier airline of Ireland and the second-largest airline in Ireland.
Aerial refueling, also referred to as air refueling, in-flight refueling (IFR), air-to-air refueling (AAR), and tanking, is the process of transferring aviation fuel from one military aircraft (the tanker) to another (the receiver) during flight.
The Aero L-39 Albatros is a high-performance jet trainer aircraft developed in Czechoslovakia by Aero Vodochody.
Aerovías de México, S.A. de C.V. operating as Aeroméxico, is the flag carrier airline of Mexico based in Mexico City.
Aerial photography is the taking of photographs of the ground from an elevated/direct-down position. Usually the camera is not supported by a ground-based structure.
The Aeronca Model 7 Champion, commonly known as the "Champ", or "Airknocker", is a single-engine, two-seat, light airplane, with a high wing and fixed conventional landing gear.
An aerosol is a colloid of fine solid particles or liquid droplets, in air or another gas. Aerosols can be natural or artificial.