| Mahra |
|
| Maine (ME) |
|
| Malacca |
|
| Malagasy Republic |
|
| Malawi |
|
| Malaya |
|
| Malaya, British Military Administration |
|
| Malaya, Federated Malay St. |
|
| Malaya, Federation of |
|
| Malaya, Japanese Occupation |
|
| Malaya, Postal Union |
|
| Malaysia |
|
| Maldives |
|
| Maldives- Revenue Stamps |
|
| Mali |
|
| Malta |
|
| Malta, Sovereign Military Order of |
|
| Manama |
|
| Manchukuo |
|
| Mangrol |
|