New Caledonia
18 years of age; universal
New Zealand
18 years of age; universal
Nicaragua
16 years of age; universal
Niger
18 years of age; universal
Nigeria
18 years of age; universal
Niue
18 years of age; universal
Norfolk Island
18 years of age; universal
Northern Mariana Islands 18 years of age; universal; indigenous inhabitants are US citizens but do not vote in US presidential elections
Norway
18 years of age; universal
Oman
21 years of age; universal; note - members of the military and
security forces are not allowed to vote