AGL may refer to: Businesses AGL Energy, Australian energy company, successor to Australian Gas Light Company AGL Resources, an American utility company Atlanta Gas Light, a subsidiary of AGL Resources Australian Gas Light Company, a former Australian energy company Science and technology Biology AGL gene, which codes for human glycogen debranching enzyme amylo- α- 1,6- glucosidase, 4- α- glucanotransferase (AGL), another name for the glycogen debranching enzyme Computing A Graphics Language, BASIC language extension for control of Hewlett-Packard plotters Adobe Glyph List, a list of glyph names for Unicode characters Apple Graphics Library, the Apple API for OpenGL Automotive Grade Linux, an open operating system and framework for automotive applications Other uses in science and technology Above ground level, in aviation Affine general linear group, a group of affine transformations in mathematics Artificial grammar learning, an investigative technique in cognitive psychology and linguistics Automatic Grenade Launcher, weapon for shooting grenades rapidly Other uses AGL, the United States Navy hull classification symbol for a lighthouse tender Abergele & Pensarn railway station, UK (National Rail code AGL) Angola, ITU letter code Fembe language (ISO 639-3 code agl) "Animism: the Gods' Lake", a fictional location in Animism (TV series)