| Rank | Abbreviation | Meaning |
|---|
| ***** | ISOA | its successors or assigns
| |
| **** | ISOA | Infrastructure Services Oriented Architecture
| |
| **** | ISOA | In Search Of Apollo
| |
| **** | ISOA | Illinois Sports Owners Association
| |
| **** | ISOA | Institute for the Study of the Americas
| |
| **** | ISOA | Immigration Service Officers Association
| |
| **** | ISOA | Information Security Officer Assistant
| |
| *** | ISOA | Instrument Society of America
| |
| *** | ISOA | Insurance Service Oriented Architecture
| |
| *** | ISOA | Interjurisdictional Support Orders Act
| |
| ** | ISOA | Illinois Swimming Officials Association
| |
| ** | ISOA | Industrial Shows of America
| |
| ** | ISOA | Intercollegiate Soccer Officials Association
| |
| ** | ISOA | inherent safety opportunity audit
| |
| * | ISOA | Innovative Solutions for Automation
| |
| * | ISOA | Irish Society of Obstetric Anaesthesia
| |
| * | ISOA | Iowa School Orchestra Association
| |
| * | ISOA | Internet Services of Albany
| |
| * | ISOA | Indiana SWAT Officer Association
| |
| * | ISOA | Institutional and Organizational Analysis
| |
| * | ISOA | Irving Symphony Orchestra Association
| |
| * | ISOA | Imperial Sovereign of Arms
| |
| * | ISOA | Indian Society of Oriental Art
| |
| * | ISOA | International Student Organization in America
| |
| * | ISOA | Institute for the Study on Aging
| |