| Acronym | Definition |
|---|
| MGI | Modular Gateway Interface |
| MGI | McKinsey Global Institute |
| MGI | Mouse Genome Informatics |
| MGI | Merge Byte Immediate |
| MGI | Media Gateway Interface |
| MGI | Mercer Global Investments (various locations) |
| MGI | Mount Gibson Iron (Australia) |
| MGI | Morgan Gaynin, Inc. (New York) |
| MGI | Managing Global Insecurity (project) |
| MGI | Mitsui Global Investment (various locations) |
| MGI | Maps and Government Information (various locations) |
| MGI | Music Games International (Needham, MA) |
| MGI | Military Geographic Information |
| MGI | Marine Geological Institute |
| MGI | Policy on the Management of Government Information (Canada) |
| MGI | Mayfield Government Inspection |
| MGI | Mechanized Generic Interface |
| MGI | Master Ground Instructor |
| MGI | Marshall Gobuty International USA, Inc. |
| MGI | Main Group Inc |
| MGI | Message Gateway Infrastructure |
| MGI | Microscale Glovebox Investigation (experiment) |
| MGI | Mobile Gateway Infrastructure |