| MUI | Macromedia User Interface 
| Others |
| MUI | Magic User Interface
| Others |
| MUI | Magical User Interface
| Others |
| MUI | Majelis Ulama Indonesia
| Others |
| MUI | Major Unusual Incidents
| Others |
| MUI | Malayan United Industries
| Others |
| MUI | Management User Interface
| Others |
| MUI | Manager User Interface
| Others |
| MUI | Maritime Union of India
| Others |
| MUI | Master User Interface
| Others |
| MUI | Mastered Ultra Instinct
| Others |
| MUI | Matter Under Inquiry
| Others |
| MUI | Mechanical Unit Injection
| Others |
| MUI | Mechanical Unit Injectors
| Others |
| MUI | Metro User Interface
| Others |
| MUI | Micro User Interface
| Others |
| MUI | Migrating User Interface
| Others |
| MUI | Migrating User Interfaces
| Others |
| MUI | Milli Unit Interval
| Others |
| MUI | Minor unusual incident
| Others |
| MUI | Mobile User Identity
| Others |
| MUI | Mopars Unlimited of Idaho
| Others |
| MUI | Muhammad University Of Islam
| Others |
| MUI | Multi User Interface
| Others |
| MUI | Multi User Interference
| Others |
| MUI | MultiLanguage User Interface
| Others |
| MUI | Multilingual User Interface
| Others |
| MUI | Musicians' Union of Ireland
| Others |
| MUI | MY User Interface
| Others |