| AASR | Ancient Accepted Scottish Rite | |
| ABG | American Brewers Guild | |
| ACCG | Ancient Coin Collectors Guild | |
| ACEG | Afghan Carpet Exporters Guild | |
| ADG | Art Directors Guild | |
| ADG | Architectural Design Guild | |
| ADG | Art Distributors Guild | |
| AG | After Guild | |
| AGA | American Guild of Appraisers | |
| AGAC | American Guild of Authors and Composers | |
| AGAG | Arkansas Gospel Announcers Guild | |
| AGAG | Animated GIF Artists Guild | |
| AGCV | American Guild of Court Videographers | |
| AGGG | Artists Guild Gallery of Greenville | |
| AGGG | Artist Guild Gallery of Greenville | |
| AGILA | Ateneo Guild of Innovative Leading Associates | |
| AGJA | American Guild of Judiac Artists | |
| AGJA | American Guild of Judaic Art | |
| AGMA | American Guild of Musical Artists | |
| AGO | American Guild of | |
| AGODA | Alabama Guild Of Decorative Artist | |
| AGSC | Australian Guild of Screen Composers | |
| AGV | Astra Guild Ventures | |
| AGVA | American Guild of Variety Artists | |
| AGWB | Auckland Guild of Winemakers and Brewers | |
