| Abbreviation | Definition |
|---|---|
| ISBR | International School of Business and Research |
| ISBR | International School of Business Research |
| ISCLR | International Society for Contact Lens Research |
| ISCLR | International Society for Contemporary Legend Research |
| ISCR | Indian Society for Clinical Research |
| ISER | Institute for Social and Economic Research |
| ISER | Institute of Social and Economic Research |
| ISFR | International Society for Fat Research |
| ISFR | International Society for Fluoride Research |
| ISGE | International Society on Gynecological Endocrinology |
| ISHR | Institute of Scottish Historical Research |
| ISIR | Institute for Systematic Investing Research |
| ISIR | Institute Of Standards Industrial Research |
| ISIR | International Society for Intelligence Research |
| ISIR | International Society for Inventory Research |
| ISIR | International Society for Invetory Research |
| ISLRTC | Indian Sign Language Research and Training Center |
| ISLRTC | Indian Sign Language Research and Training Centre |
| ISLRTC | Indian Sign Language Research Training Centre |
| ISMR | Institute of Safety Management and Research |