| Abbreviation | Definition |
|---|---|
| IKS | International Kodály Society |
| ILAB | Ligue Internationale de la Librairie Ancienne |
| ILADS | International Lyme Associated Diseases Society |
| ILAS | Institute for Lifecourse and Society |
| ILAS | International Linear Algebra Society |
| ILAS | Irish Light Aviation Society |
| ILBS | International Ladies Benevolent Society |
| ILCS | International Liquid Crystal Society |
| ILLS | International Laparoscopic Liver Society |
| ILPS | International Lecithin and Phospholipid Society |
| ILSA | International Lung Sounds Association |
| ILTS | International Liver Transplant Society |
| ILTS | International Liver Transplantation Society |
| ILZRO | International Lead Zinc Research Organization |
| IMA | 'F,EF E/J1J* 'J1'F |
| IMA | International Mycological Association |
| IMA | Iran Management Association |
| IMA | Israel Medical Association |
| IMA | ÔÔáêÓèÕê ÔèäÕÐÙê ÑÙéèÐÜ |
| IMAC | Innovation Management Association of Canada |