| Abbreviation | Definition |
|---|---|
| MDC | Media Corp |
| MDC | Media Corporation (de-listed) |
| MDC | Media Corporation (de-listed) |
| MDG | Mobile Docs |
| MDM | Mdm Engin. |
| MDO | Mandarin In.sg |
| MDOB | Mandarin In.ber |
| MDOJ | Mandarin In.jer |
| MDST | Medicsight |
| MDW | Mediwatch |
| MDY | Mdy Healthcare |
| MDZ | Mediazest |
| MEC | Mecom Group |
| MEC | Mecom Grp |
| MEDG | Medgenics(regs) |
| MEDI | Medilink |
| MEDU | Medgenics |
| MEG | Mice Group |
| MEG | Mice Grp. |
| MEI | Media & Inc Tst |