AGSI
| Acronym | Definition |
|---|---|
| AGSI | Association of Garda Sergeants and Inspectors (est. 1978; Dublin, Ireland) |
| AGSI | Association for Global Strategic Information |
| AGSI | American General Securities Incorporated (various locations) |
| AGSI | Advanced Growing Systems, Inc. (Marietta, GA) |
| AGSI | All Guest Supplies International (Switzerland) |
| AGSI | Automatic Government Source Inspection |