| Acronym | Definition |
|---|
| IRMO➣Iraq Reconstruction Management Office |
| IRMO➣Information Resource Management Office (US CDC) |
| IRMO➣Indoamerican Refugee and Migrant Organisation (est. 1985; UK) |
| IRMO➣Iraqi Revolutionary Maoist Organization |
| IRMO➣Islamic Revolution Mujahedin Organization (Iran) |
| IRMO➣In Regard to the Marriage Of (law) |