| Acronym | Definition |
|---|
| OEMC➣Office of Emergency Management and Communications (Chicago, IL) |
| OEMC➣Office of Energy Management and Conservation (Colorado Governor's Office) |
| OEMC➣Ontario East Municipal Conference (Canada) |
| OEMC➣Old English Mastiff Club (England, UK) |
| OEMC➣Online European Mahjong Championship (est. 2007) |
| OEMC➣OPSIS Enviman Cloud (Sweden) |
| OEMC➣Original Equipment Manufacturer CAGE |