Monaco
18 years of age; universal
Mongolia
18 years of age; universal
Montenegro
18 years of age; universal
Montserrat
18 years of age; universal
Morocco
18 years of age; universal
Mozambique
18 years of age; universal
Namibia
18 years of age; universal
Nauru
20 years of age; universal and compulsory
Nepal
18 years of age; universal
Netherlands
18 years of age; universal