| Abbreviation | Definition |
|---|---|
| MAC | Marechale Cap. |
| MACF | MacFarlane Group |
| MAE | Mallett |
| MAI | Maintel Holdings |
| Mail.rugrp S | |
| MAJE | Majedie Inv. |
| MAN | Manroy |
| MAR | Mar City, P.L.C. |
| MARL | Mariana Res |
| MARS | Marston's |
| MASA | Masawara |
| MATD | Petro Matad |
| MAV4 | Maven I&g 4 |
| MAVD | Magyar Telekom |
| MAVS | Maven I&g 4 S |
| MAW | Maruwa |
| MAX | Max Prop |
| MAYG | May Gurney |
| MBC | Mitsub.corp |
| MBC | Mitsubishi Corporation |