Parties and Range States
| Title | Status | Status date | CMS Party number | Region |
|---|---|---|---|---|
| Madagascar | MOU Signatory | 2017 | 101 | Africa |
| Malaysia | Range State | AM | Asia | |
| Maldives | Range State | 131 | Asia | |
| Malta | Range State | 074 | Europe | |
| Marshall Islands | Range State | Oceania | ||
| Mauritania | MOU Signatory | 2014 | 054 | Africa |
| Mauritius | Range State | 086 | Africa | |
| Mexico | Range State | North America | ||
| Micronesia | Range State | AM | Oceania | |
| Monaco | MOU Signatory | 2011 | 040 | Europe |
| Montenegro | Range State | 111 | Europe | |
| Morocco | Range State | 042 | Africa | |
| Mozambique | Range State | 112 | Africa | |
| Myanmar | Range State | AM | Asia | |
| Namibia | Range State | AM | Africa | |
| Nauru | MOU Signatory | 2010 | AM | Oceania |
| Netherlands | MOU Signatory | 2011 | 001 | Europe |
| New Zealand | MOU Signatory | 2015 | 069 | Oceania |
| Nicaragua | Range State | South & Central America & The Caribbean | ||
| Nigeria | Range State | 022 | Africa |