| Acronym | Definition |
|---|
| MIU | Make It Up |
| MIU | Macro in Use |
| MIU | Main Instrument Unit |
| MIU | Meter Interface Unit |
| MIU | Minor Injuries Unit (hospitals) |
| MIU | Misr International University (Cairo, Egypt) |
| MIU | Million International Units |
| MIU | Men in Uniform |
| MIU | Maharishi International University (Fairfield, IA) |
| MIU | Minimally Invasive Urology (various locations) |
| MIU | Mobile Internet User |
| MIU | Memory Interface Unit (microprocessor architecture and memory interface) |
| MIU | Molecular Imaging University (Siemens) |
| MIU | Machine Interface Unit |
| MIU | Minimum Investment Unit |
| MIU | Management Incentive Unit (finance) |
| MIU | Multifunction Interface Unit |
| MIU | Manipur International University (est. 2018) |
| MIU | Main Instrument Unit (automotive) |
| MIU | Mother Infant Unit |
| MIU | Medical Information Unit |
| MIU | Major Investigation Unit |
| MIU | Missile Interface Unit |
| MIU | Moisture, Insolubles, and. Unsaponifiables (grease rendering) |
| MIU | Measurement Indication Unit (electrical leakage current unit) |
| MIU | Multistation Interface Unit |
| MIU | Message Interface Unit |
| MIU | Metallic Interface Unit (Hekimian) |
| MIU | Media Interoperability Unit |
| MIU | Marketing Intelligence Unit (various organizations) |
| MIU | Microwave Interface Unit |
| MIU | Middle Income Unit |
| MIU | Moisture, Insolubles, Unsaponifiables |
| MIU | Mongolian International University (Mongolia) |