| ISMI | Idaho Sports Medicine Institute 
| Others |
| ISMI | Information Systems Management and Innovation
| Others |
| ISMI | Institute for the Study of Modern Israel
| Others |
| ISMI | Integrated Systems Management Inc
| Others |
| ISMI | Internalized Stigma of Mental Illness
| Others |
| ISMI | International Security Management Institute
| Others |
| ISMI | International SEMATECH Manufacturing Initiative
| Others |
| ISMI | Islamic Scientific Manuscripts Initiative
| Others |
| ISMI | Isotopic Solutions for Medicine and Industry
| Others |
| ISMI | Isuzu Mu-X Indonesia
| Others |