| IEC | Electronics Corp 
| Others |
| IEC | Icetratt Entertainment Company
| Others |
| IEC | IEC Electronics Corp
| Others |
| IEC | Illinois Environmental Council
| Others |
| IEC | Imagery Exploitation Cell (within CARS)
| Others |
| IEC | Import Export Code
| Others |
| IEC | Import Export Codes
| Others |
| IEC | Import/Export Code
| Others |
| IEC | Importer Exporter Code
| Others |
| IEC | Incoming Error Count
| Others |
| IEC | Independant Exchange Company
| Others |
| IEC | Independent Educational Consultant
| Others |
| IEC | Independent Electoral Commission
| Others |
| IEC | Independent Electrical Contractors
| Others |
| IEC | Independent Ethics Committee
| Others |
| IEC | Industrial and Environmental Concepts
| Others |
| IEC | Industrial Emergency Council
| Others |
| IEC | Info Education Communications
| Others |
| IEC | Information and Education Campaign
| Others |
| IEC | Information Education and Communication
| Others |
| IEC | Information Education Communication
| Others |
| IEC | Information, Education and Communication
| Others |
| IEC | Information, Education, and Communication
| Others |
| IEC | Informational Exception Control
| Others |
| IEC | Infused Emitter Coupling
| Others |
| IEC | Injection Electronique de Carburant
| Others |
| IEC | Inland Empire Coalition
| Others |
| IEC | Innovative Entrepreneurial and Creative
| Others |
| IEC | Institute des Experts Comptables et des Conseillers Fiscaux (Belgium)
| Others |
| IEC | Institute of Energy Conversion
| Others |
| IEC | Instrument Panel Electrical Center
| Others |
| IEC | Intake Exhaust Chip
| Others |
| IEC | Integrated Engine Controller
| Others |
| IEC | Integrated Engineering Consultants
| Others |
| IEC | Integrated Engineering Courses
| Others |
| IEC | Intelligence Evaluation Committee
| Others |
| IEC | Intelligent Emergency Call
| Others |
| IEC | Intensive English Center
| Others |
| IEC | Inter Exchange Carrier
| Others |
| IEC | InterExchange Carrier
| Others |
| IEC | Intermeccanica Enthusiasts Club
| Others |
| IEC | International Edsel Club
| Others |
| IEC | International Education Corporation
| Others |
| IEC | International Education Council
| Others |
| IEC | International Egg Commission
| Others |
| IEC | International Electro-technical Commission
| Others |
| IEC | International Electronics Commission
| Others |
| IEC | International Electrotechnical Commission
| Others |
| IEC | International Electrotechnical Committee
| Others |
| IEC | International Engineering Consortium
| Others |
| IEC | International English Center
| Others |
| IEC | International Entrepreneurship Center
| Others |
| IEC | International Experience Canada
| Others |
| IEC | International Eyecare Center
| Others |
| IEC | Internet Easy Chat
| Others |
| IEC | Internet Empowered Consumer
| Others |
| IEC | Internet Engineering Consortium
| Others |
| IEC | Internet Exchange Centers
| Others |
| IEC | Interrupt Enable Current
| Others |
| IEC | Interuniversity Expertise Center
| Others |
| IEC | Intra Epidermal Carcinoma
| Others |
| IEC | Intrepid Enterprises Corporation
| Others |
| IEC | Invalid Escape Character
| Others |
| IEC | Invisible Escape Car
| Others |
| IEC | Iowa Educators Consortium
| Others |
| IEC | Islamic Education Center
| Others |
| IEC | Island Eastern Corridor, Hong Kong
| Others |
| IEC | Israel Electric Corporation
| Others |
| IEC | Item Entry Control
| Others |