| Acronym | Definition |
|---|
| IDA | International Development Association (World Bank) |
| IDA | International Documentary Association |
| IDA | International Dyslexia Association |
| IDA | Institute for Defense Analyses |
| IDA | Infocomm Development Authority (Singapore) |
| IDA | International Development Agency |
| IDA | Iron Deficiency Anemia (medicine) |
| IDA | Infocomm Development Authority of Singapore |
| IDA | International Door Association |
| IDA | Institutionen För Datavetenskap (Computer and Information Science Department, Linköpings Universitet, Sweden) |
| IDA | Investment Dealers Association of Canada |
| IDA | Interchange of Data Between Administrations |
| IDA | International Downtown Association |
| IDA | International Disability Alliance |
| IDA | International Desalination Association |
| IDA | Instituto de Desarrollo Agrario (Spanish: Agrarian Development Institute; Costa Rica) |
| IDA | International Dispensary Association (Netherlands) |
| iDA | International Design Awards (Los Angeles, California) |
| IDA | Intercollegiate Dressage Association |
| IDA | Irish Dental Association |
| IDA | Intelligent Drive Array |
| IDA | Information Dependent Acquisition |
| IDA | IDA-Discover (i-data, TCP/IP port 5742) |
| IDA | Idaho Falls, ID, USA (Airport Code) |
| IDA | Interface for Distributed Automation |
| IDA | Infantry Division Association |
| IDA | Integrated Digital Access |
| IDA | International Depository Authority |
| IDA | International Deployment of Accelerometers |
| IDA | Irish Development Authority |
| IDA | Intelligent Disk Array |
| IDA | Interchange of Data between Administration (European Telematics Programme) |
| IDA | Initial Denial Authority |
| IDA | Internet Data Administration (Microsoft file extension) |
| IDA | Institute for Development Anthropology |
| IDA | Intelligent Distribution Agent |
| IDA | Idaho Dairymen’s Association |
| IDA | Indemnisation Directe de l'Assuré (French: Direct Compensation of the Insured) |
| IDA | Inner Dynein Arm |
| IDA | Integrated Data Analysis |
| IDA | International Dark-Sky Association, Inc. |
| IDA | Internet Directory Assistance |
| IDA | Information, Decision, Action |
| IDA | Indirect Data Addressing |
| IDA | International Directory Assistance (Sprint) |
| IDA | Initial Design Activity |
| IDA | Intelligent Desktop Assistant |
| IDA | Interactive Data Archive |
| IDA | Input Data Acknowledge |
| IDA | Integrated Digital Avionics |
| IDA | Identity of Key for Authentication |
| IDA | Inertial Data Assembly |
| IDA | Interconnect Device Arrangement |
| IDA | Image Difference Analysis |
| IDA | Integrated Disbursing & Accounting |
| IDA | Integrated Disk Adapter (Sperry Univac Mainframes) |
| IDA | Infrared Data Acquisition |
| IDA | Ionospheric Dispersion Analysis |
| IDA | Item Development Administrator |
| IDA | Initial Distress Alert |
| IDA | Independent Digital Artists |
| IDA | Internet Dental Alliance (marketing) |
| IDA | Industrial Distribution Association |
| IDA | Internet Download Accelerator (freeware) |
| IDA | Industrial Disputes Act 1947 (India) |
| IDA | Individual Development Account |
| IDA | Idaho Department of Agriculture |
| IDA | Industrial Development Authority |
| IDA | In Defense of Animals |
| IDA | Independent Distributors Association |
| IDA | Indirect Access |
| IDA | Idaho (old style postal) |
| IDA | In-Depth Analysis |
| IDA | Industrial Development Agency |
| IDA | Independent Documentary Association |
| IDA | Iminodiacetic Acid |
| IDA | Indian Dental Association (Mumbai, India) |