| Acronym | Definition |
|---|
| OMI➣Organización Marítima Internacional (Spanish: International Maritime Organization) |
| OMI➣Ozone Monitoring Instrument |
| OMI➣Oblates of Mary Immaculate (religious order) |
| OMI➣Old Myocardial Infarction (heart disease) |
| OMI➣Organisation Maritime Internationale (French: International Maritime Organization; UN) |
| OMI➣Owens Minor, Inc. (various locations) |
| OMI➣Object Manipulation Interface |
| OMI➣Optical Mode Interface |
| OMI➣Office des Migrations Internationales (France) |
| OMI➣Owner Move-In |
| OMI➣Office of the Medical Investigator (New Mexico) |
| OMI➣Oregon Mutual Insurance |
| OMI➣Operations Management International, Inc. |
| OMI➣Open Model Interface |
| OMI➣Open Market, Inc. |
| OMI➣Open Messaging Interface |
| OMI➣Olford Ministries International |
| OMI➣Olympic Medical Institute (UK) |
| OMI➣Organizzazione Marittima Internazionale (Italian: International Maritime Organization) |
| OMI➣Ocean Mammal Institute |
| OMI➣Operator-Machine Interface |
| OMI➣Optical Modulation Index |
| OMI➣Old Man Intake (automobile air intake modification) |
| OMI➣Open Microprocessor Initiative |
| OMI➣Open Mind Index (musical taste) |
| OMI➣Oocyte Maturation Inhibitor |
| OMI➣Offender Management Inspection (UK) |
| OMI➣Operations and Maintenance Instructions |
| OMI➣Office of Management Information |
| OMI➣Ordnance Modifications Instructions (US Navy) |
| OMI➣Office of Military Instruction |
| OMI➣Orbiter Maintenance Instruction (NASA) |
| OMI➣Office of Medical Informatics (various schools) |
| OMI➣Operator's Maintenance Instructions |
| OMI➣Ohio Mechanical Institute (University of Cincinnati; Ohio) |