| Acronym | Definition |
|---|
| AGN | Active Galactic Nucleus |
| AGN | Again (Amateur Radio) |
| AGN | Agencia Guatemalteca de Noticias (Spanish: Guatemalan News Agency) |
| AGN | Analog Gain |
| AGN | Application Group Name |
| AGN | Acute Glomerulonephritis |
| AGN | Accountants Global Network |
| AGN | Articles for the Government of the Navy |
| AGN | Air Gabon (ICAO code) |
| AGN | Ascension Gaming Network, Inc. |
| AGN | Acid Gaming Network |
| AGN | Asociación Guatemalteca de Nefrología (Spanish: Guatemalan Association of Nephrology) |
| AGN | Abyssal Gaming Network |
| AGN | Aerojet General Nucleonics |
| AGN | Armageddon Games Network |
| AGN | Armageddon Games Network (game developer) |
| AGN | Agence Geneviève Naturisme (French naturist real estate agency) |
| AGN | Anwendungen der Informatik In Geistes- und Naturwissenschaften (Informatics, University Of Hamburg) |
| AGN | Angry Gamer Network |
| AGN | Australian Gaming Network |
| AGN | Automatically Generated Number |
| AGN | Arts Graphiques Numériques (French: Digital Graphic Arts) |
| AGN | Assis Global Networks (Japanese anime studio) |