| Abbreviation | Definition |
|---|---|
| MSC | Minerals Corporation Ltd |
| MSF | Maryborough Sugar Factory Ltd |
| MSI | Multistack International Ltd |
| MSP | Maxsec Group Limited |
| MSR | Manas Resources, LTD. |
| MST | Metal Storm, LTD. |
| MSTG | Metal Storm, LTD. |
| MSTGA | Metal Storm Limited |
| MTB | Mount Burgess Mining NL |
| MTD | Metroland Australia Ltd |
| MTE | Metrocoal Limited |
| MTH | Mithril Resources Ltd |
| MTI | Montec International Ltd |
| MTN | Marathon Resources Ltd |
| MTS | Metcash Ltd |
| MTSKOA | Metcash Limited |
| MTSKOP | Metcash Limited |
| MTSKRA | Metcash Limited |
| MTU | M2 Telecommunications Group Ltd |
| MUB | Mongolian Resource Corporation Ltd |