| Acronym | Definition |
|---|
| OEM | Original Equipment Manufacturer/Manufacturing |
| OEM | Office of Emergency Management |
| OEM | Operational Exposure Monitoring (safety) |
| OEM | Oracle Enterprise Manager |
| OEM | Occupational and Environmental Medicine |
| OEM | Oregon Emergency Management |
| OEM | Original Harley Panhead (motorcycles) |
| OEM | Ohio Electric Motors (est. 1917) |
| OEM | Organización Editorial Mexicana (Spanish) |
| OEM | Original Equipment Manufacturer |
| OEM | Office Emergency Management |
| OEM | Office of Enrollment Management (various schools) |
| OEM | Optical Emission Spectroscopy |
| OEM | Object Exchange Model |
| OEM | Order Entry Module |
| OEM | Other Equipment Manufacturer |
| OEM | Optical Equipment Manufacturer |
| OEM | One Eyed Monster (Television) |
| OEM | Order Every Month |
| OEM | Onde Electro-Magnétique (French: Electromagnetic Wave) |
| OEM | Open Ended Market |
| OEM | One Europe Magazine (Association des Etats Généraux des Etudiants de l'Europe) |
| OEM | Operations, Engineering & Maintenance |
| OEM | Open-Ended Mathematics |
| OEM | Overseas Export Market |
| OEM | Old Economy Model |
| OEM | On-Equipment Material |
| OEM | Operating Expenses & Maintenance |
| OEM | Orange Engineering & Machine Company, Inc. (manufacturer of hydraulic presses and vacuum lamination presses for the printed circuit board industry) |
| OEM | Ontology Engineering & Management |
| OEM | Outdoor Environment Media Ltd. |
| OEM | Outboard Exhaust Manifold (engine component) |
| OEM | Overtime Eligible Manager |