| MWI | Mad Wae It
| Others |
| MWI | Mad With It
| Others |
| MWI | Many Worlds Interpretation
| Others |
| MWI | Many-Worlds Interpretation
| Others |
| MWI | Maramuni, Papua New Guinea
| Others |
| MWI | Massachusetts Watershed Initiative
| Others |
| MWI | Master Wholesale, Inc.
| Others |
| MWI | Mediation Works Incorporated
| Others |
| MWI | Mellor Watts International Group of Companies
| Others |
| MWI | Memory Write Invalidate
| Others |
| MWI | Meridian West Institute
| Others |
| MWI | Message Waiting Indication
| Others |
| MWI | Message Waiting Indicator
| Others |
| MWI | Meter Warning Lamp and Indicator
| Others |
| MWI | Microsoft Word Intruder
| Others |
| MWI | Microwave Ignition
| Others |
| MWI | Millerswork, Inc.
| Others |
| MWI | MINISIS Web Interface
| Others |
| MWI | Missouri Watershed Initiative
| Others |
| MWI | Missouri Welding Institute
| Others |
| MWI | Mobile Web Initiative
| Others |
| MWI | Modern War Institute
| Others |
| MWI | Moving Water Industries
| Others |
| MWI | Murphey Western Institute of Oklahoma at Medicine Park
| Others |