The initials AEG are used for or may refer to:
- AEG (German company), Allgemeine Elektricitäts-Gesellschaft ("General Electricity Company"), former German electrical manufacturer
- AEG (brand), licensed by Electrolux to several companies for a variety of products
- Anschutz Entertainment Group, an American entertainment company
- Thomas & Friends: All Engines Go, a 2021 animated TV series that serves as the reboot of the original Thomas & Friends series.
- Automatic electric guns, a type of airsoft gun
- Alderac Entertainment Group, an American game publisher
- Association of Environmental & Engineering Geologists
- Arctic Equestrian Games, an annual horse show held in Norway
- AEG, the FAA LID for Double Eagle II Airport, Albuquerque, New Mexico, US
- AEG, the IATA code for Aek Godang Airport, Padang Sidempuan, Indonesia
- N-(2-aminoethyl)glycine, a backbone molecule of peptide nucleic acids
- Annissa Essaibi George, an American Democratic Party politician