| mandatory Government inspection | Government | MGI |
| Moneygram International, Inc. | NASDAQ Symbol | MGI |
| MANIGACHI | Indian Railway Station | MGI |
| Mechanized Generic Interface | Computer Networking | MGI |
| Matagorda Island (tx) | Airport Code | MGI |
| Military Geographic Information | Military and Defence | MGI |
| Marine Geological Institute | Ocean Science | MGI |
| M G I Properties | NYSE Symbol | MGI |
| Mutual Ground, Inc. | Organization | MGI |
| Mobile Games Interoperability | Sports | MGI |
| Management Graphics, Inc. | Business Firm | MGI |
| Mouse Genome Informatics | Human Genome | MGI |
| Microbial Genome Initiative | Human Genome | MGI |
| Marcus Graphics Interface | Computer Software | MGI |
| Must Go Immediately | Business | MGI |
