| Rank | Abbreviation | Meaning |
|---|
| ***** | IWAC | Information Warfare Application Course
| |
| **** | IWAC | Imo Women Awareness Campaign
| |
| **** | IWAC | Information Warfare Analysis Center
| |
| **** | IWAC | Invasive Weed Awareness Coalition
| |
| **** | IWAC | Injured Workers Advocacy Centre
| |
| **** | IWAC | International Workshop on Advanced Ceramics
| |
| **** | IWAC | International Water Assessment Centre
| |
| *** | IWAC | Injured Workers Action Committee
| |
| *** | IWAC | International Workshop on Annotation for Collaboration
| |
| *** | IWAC | Isle of Wight Athletic Club
| |
| *** | IWAC | International Writing Across the Curriculum
| |
| ** | IWAC | Industrial Waste Advisory Committee
| |
| ** | IWAC | Idaho Weed Awareness Campaign
| |
| ** | IWAC | International Women's Anthropology Conference, Inc.
| |
| ** | IWAC | ISDN Wide Area Centrex
| |
| ** | IWAC | Invasive Weed Awareness Committee
| |
| * | IWAC | Indonesia World Affairs Council
| |
| * | IWAC | It Will Always Change
| |
| * | IWAC | Inland Waterways Advisory Committee
| |
| * | IWAC | Inland Waterways Advisory Council
| |
| * | IWAC | Indigenous Woman Aboriginal Corporation
| |
| * | IWAC | Index Washington Area Conceptu
| |
| * | IWAC | International Water Assesment Center
| |