| Acronym | Definition |
|---|
| IOM | Institute of Medicine (National Academy of Sciences) |
| IOM | International Organization for Migration |
| IOM | Institute of Materials |
| IOM | Institute of Marketing (UK) |
| IOM | Institute of Occupational Medicine |
| IOM | Installation, Operation, and Maintenance (US DoD) |
| IOM | Institute of Metals (Britain) |
| IOM | Ides of March (band) |
| IOM | Institute of Operations Management |
| IOM | Intraoperative Monitoring |
| IOM | Inch of Mercury |
| IOM | Invensys Operations Management (Plano, TX) |
| IOM | Imperium of Man (science fiction) |
| IOM | Input/Output Module |
| IOM | Internet-Only Manual |
| IOM | International Office Machines |
| IOM | Integrated Object Model |
| IOM | Indian Order of Merit |
| IOM | Jupiter Optimus Maximus |
| IOM | Install, Operate and Maintain |
| IOM | It's Only Money |
| IOM | Inter-Office Memorandum |
| IOM | Interoperability Matrix |
| IOM | Installation & Operation Manual |
| IOM | Idiot Of the Month |
| IOM | International Order of Merit (Cambridge, UK) |
| IOM | International One Meter (radio controlled sailing boat) |
| IOM | Infrastructure Optimization Model |
| IOM | Internal Office Memo |
| IOM | Invasion of Meridell (online game) |
| IOM | Inspector of Ordnance Machinery (UK) |
| IOM | Institute for Organizational Management (US Chamber of Commerce) |
| IOM | Isle Of Man, Isle Of Man, United Kingdom - Ronaldsway (Airport Code) |
| IOM | Input-Output Multiplexer |
| IOM | Investigation Operations Manual (FDA) |
| IOM | Inert Operational Missile |
| IOM | Instruction, Operation and Maintenance |
| IOM | Internal Operations Manager |
| IOM | Innovator of the Month (Award) |
| IOM | Interpreter Operations Manager (Language Line Services) |
| IOM | Integrated Optics Module |