| IECA | Independent Educational Consultants Association 
| Others |
| IECA | Independent Electrical Contractors Association
| Others |
| IECA | Industrial Energy Consumers of America
| Others |
| IECA | Intercounty Electric Cooperative Association
| Others |
| IECA | International E-Commerce Association
| Others |
| IECA | International Energy Credit Association
| Others |
| IECA | International Erosion Control Association
| Others |
| IECA | Iranian E-Commerce Association
| Others |