| Acronym | Definition |
|---|
| MISI➣Management Information Services, Inc. (consulting firm; Washington, DC) |
| MISI➣Metro Information Services Inc. (Virginia) |
| MISI➣Module Interaction Stability Index (software metric) |
| MISI➣Micro-Sensors for Imaging |
| MISI➣Municipal Information Systems, Inc. (St. Louis, MO) |
| MISI➣Modular Imaging Spectrometer Instrument |
| MISI➣Municipal Infrastructure and Support Initiative (USAID) |
| MISI➣Marubeni-Itochu Steel Incorporated (Japan) |