| Acronym | Definition |
|---|
| IDEA | Improvement and Development Agency (UK government) |
| IDEA | Innovations Deserving Exploratory Analysis (National Academies) |
| IDEA | International Institute for Democracy and Electoral Assistance |
| IDEA | International Data Encryption Algorithm (cryptography method by Xuejia Lai and James Massey) |
| IDEA | International Debate Education Association |
| IDEA | Iowa Department of Education |
| IDEA | International Design Excellence Awards (Industrial Designers Society of America) |
| IDEA | International Diaspora Engagement Alliance (Washington, DC) |
| IDEA | Industrial Design Excellence Awards |
| IDEA | Implementation Dependant Expansion Area |
| IDEA | International Data Encryption Algorithm |
| IDEA | Institute of Development in Automotive Engineering |
| IDEA | Instituto para el Desarrollo Empresarial de la Argentina |
| IDEA | International Dialects of English Archive |
| IDEA | International District Energy Association (formerly National District Heating Association) |
| IDEA | Iowa Department of Elder Affairs (Des Moines, IA) |
| IDEA | Industry Data Exchange Association |
| IDEA | Irish Doctors Environmental Association |
| IDEA | Individuals with Disabilities Education Act of 1990 |
| IDEA | Innovative Development through Employee Awareness (US Air Force suggestion program) |
| IDEA | International Dance Exercise Association |
| IDEA | Individual Development and Educational Assessment |
| IDEA | International Diving Educators Association |
| IDEA | Instituto para el Desarrollo de Antioquia (Medellín, Colombia) |
| IDEA | Instituto de Derecho y Economía Ambiental (Spanish: Institute for Environmental Law and Economics) |
| IDEA | Fundación Instituto de Estudios Avanzados (Caracas, Venezuela) |
| IDEA | Institute for Democracy, Education & Access (UCLA) |
| IDEA | Integrated Data for Enforcement Analysis |
| IDEA | Identification Electronique des Animaux (French) |
| IDEA | Interactive Data Exploration and Analysis |
| IDEA | Internet Design, Engineering, and Analysis |
| IDEA | Infusing Satellite Data Into Environmental Applications |
| IDEA | International Development Enterprise Associates |
| IDEA | Innovative Demonstrations for Energy Adaptability (New York, NY) |
| IDEA | International Data Exchange Association |
| IDEA | Indiana Democratic Editorial Association |
| IDEA | Institute for Defense Education and Analysis |
| IDEA | Improve by Developing Efficient Alternatives |
| IDEA | International Defense Educational Arrangement |
| IDEA | Intelligent Design Aid |
| IDEA | International Database for Ecoprofile Analysis |
| IDEA | Internet Development and Exchange Association |
| IDEA | Inventory of the Dimensions of Emerging Adulthood (behavioral science) |
| IDEA | Integrated Design/Engineering Aide |
| IDEA | Instant Discounts Electronically Applied (Marsh Supermarkets) |
| IDEA | Intelligent Document Exchange Architecture |
| IDEA | Interdisciplinary Education and Action Program |
| IDEA | Identify, Define, Empower, Assess |
| IDEA | Individuals Dedicated to Excellence and Achievement |
| IDEA | Integrated Design Engineering Activity |
| IDEA | Integrity Design & Engineering Associates (engineering firm) |
| IDEA | Imperial College London, Delft University of Technology, ETH Zurich, RWTH Aachen University (European technical Universities league) |
| IDEA | Innovative in Developing Enterprising Activities |
| IDEA | Inverted Duplication Exchange and Advocacy |
| IDEA | Individual Development and Educational Advancement |
| IDEA | Interrelationships, Diversity, Ecosystems and Adaptations (Yosemite Institute) |
| IDEA | Imaging Double Energy Analyzer |
| IDEA | Irish Dance and Entertainment Association |
| IDEA | Integrated Development Emulation and Analysis |
| IDEA | Institute for Democratic Education in America (Tarrytown, NY) |