| Rank | Abbreviation | Meaning |
|---|
| ***** | IECA | Independent Electrical Contractors of Arizona
| |
| **** | IECA | Inibidores da Enzima Conversora da Angiotensina
| |
| **** | IECA | Importers and Exporters Council of Australia
| |
| *** | IECA | Instituto Educacional Castro Alves
| |
| *** | IECA | International Environmental Communication Association
| |
| *** | IECA | Index of Empathy for Children and Adolescents
| |
| *** | IECA | Inhibidor del Enzima Conversor de la Angiotensina
| |
| *** | IECA | Independent Electrical Contractors Association
| |
| ** | IECA | Industrial Energy Consumers of America
| |
| ** | IECA | Industrial Engineering and Chemical Agency
| |
| ** | IECA | Instituto Español del Cemento y sus Aplicaciones
| |
| ** | IECA | Instituto de Ensino e Cultura do Amapá
| |
| ** | IECA | INTERNATIONAL EROSION CONTROL ASSN
| |
| ** | IECA | Indonesia Exhibition Companies Association
| |
| ** | IECA | Independent Election Corporation of America
| |
| * | IECA | Information, Education and Communication Advocacy
| |
| * | IECA | Industrie Estrattive Campane Associate
| |
| * | IECA | International Electronic Communication Analysts, Inc.
| |
| * | IECA | Interim External Certificate Authority
| |
| * | IECA | Independent Educational Consultant Association
| |
| * | IECA | intestinal epithelial cell antibodies
| |
| * | IECA | International Engineering Consultants Association
| |
| * | IECA | International Erosion Control Associates
| |
| * | IECA | Interim External Certificate Authorities
| |
| * | IECA | Intercounty Electric Cooperative Association
| |