| Rank | Abbreviation | Meaning |
|---|
| ***** | AGSI | Stabilized Glide Slope Indicator (shipboard)
| |
| **** | AGSI | American General Securities Incorporated
| |
| **** | AGSI | Advanced Growing Systems, Inc.
| |
| **** | AGSI | Advantec Global Services Inc
| |
| *** | AGSI | Association of Garda Sergeants and Inspectors
| |
| ** | AGSI | Asosiasi Guru Sejarah Indonesia
| |
| ** | AGSI | Asociacion de Graduados en Sistemas de Informacion
| |
| ** | AGSI | Association of Ghana Solar Industries
| |
| ** | AGSI | Advanced Government Solutions Inc
| |
| ** | AGSI | Association of Global Strategic Information
| |
| * | AGSI | Automatic Government Source Inspection
| |
| * | AGSI | allied global solutions inc
| |
| * | AGSI | Advanced Gaming Systems Inc
| |
| * | AGSI | American Global Standards India
| |
| * | AGSI | Associazione giovani somali d'Italia
| |
| * | AGSI | Advisory Group on Societal Impacts
| |
| * | AGSI | Aggregated Gas Storage Inventory
| |
| * | AGSI | American Graduate School of International
| |
| * | AGSI | Association for Global Strategic Information
| |
| * | AGSI | All Guest Supplies International
| |
| * | AGSI | Atlanta Group Systems Inc
| |