| Abbreviation | Definition |
|---|---|
| MICG | Microfield Graphics, Inc. |
| MICT | Microcell Telecommunications, Inc. |
| MIDD | The Middleby Corporation |
| MIEC | Magna Entertainment Corporation |
| MIECV | Magna Entertainment Corporation |
| MIGI | Meridian Insurance Group, Inc. |
| MIGR | Migra Tec, Inc. |
| MIGS | McGlen Internet Group |
| MIHL | M I H Limited |
| MIKL | Michael Foods, Inc. |
| MIKN | Mikohn Gaming Corporation |
| MIKR | Mikron Instrument Company, Inc. |
| MIKSU | Miles Original, Inc. |
| MILAA | Milastar Corporation Class A |
| MILB | Millbrook Press, Inc. |
| MILK | Say Yes Foods, Inc. |
| MILM | Millennium Electronics |
| MILR | Miller Diversified Corporation |
| MILT | Miltope Group, Inc. |
| MIMS | M I M Corporation |