| Abbreviation | Definition |
|---|---|
| ICSTA | Institut Canadien de Science et Technologie Alimentaires |
| ICSTI | Conseil International pour l'Information scientifique et technique |
| ICSTI | International Council for Scientific and Technical Information |
| ICSW | International Civil Society Week |
| ICVS | International Colour Vision Society |
| IDA | Ingeniørforeningen i Danmark |
| IDA | Ingenirforeningen i Danmark |
| IDA | Society of Danish Engineers |
| IDDS | Indianapolis District Dental Society |
| IdE | Institute of Spain |
| IdE | Instituto de Espaa |
| IdE | Instituto de España |
| IDEALS | International Dental Ethics And Law Society |
| IDF | Fdration internationale de laiterie |
| IDF | Federacin Internacional de Lecheria |
| IDF | Federación Internacional de Lecheria |
| IDF | Fédération internationale de laiterie |
| IDF | Internationaler Milchwirtschaftverband |
| IDGS | Island Disc Golf Society |
| IDLS | International Data Links Society |