| Acronym | Definition |
|---|
| IEMS➣Integrated Environmental Management System (various organizations) |
| IEMS➣Integrated Element Management System |
| IEMS➣Internet Exchange Messaging Server |
| IEMS➣Integrated Emergency Management System |
| IEMS➣Industrial Engineering and Management Systems |
| IEMS➣Internet Exchange Messaging Server (software) |
| IEMS➣International Emergency Multimedia Service |
| IEMS➣Installation Equipment Management System |
| IEMS➣International Event Management Standard (Canadian Tourism Human Resource Council) |