AKG is a three-letter abbreviation with multiple meanings, as described below:
- AKG Acoustics, an American owned, Austrian manufacturer of audio electronics
- Alpha-Ketoglutaric acid, also known as 2-Ketoglutaric acid, 2-Oxopentanedioic acid, 2-Oxoglutamate, 2-Oxoglutaric acid & Oxoglutaric acid
- Asian Kung-Fu Generation, a Japanese rock band
- Alternatív Közgazdasági Gimnázium, a high school in Budapest, Hungary
- A.K. Gopalan, an Indian communist leader
- The ICAO Code for No. 84 Squadron RAF, United Kingdom