New Caledonia
slightly smaller than New Jersey

New Zealand
about the size of Colorado

Nicaragua
slightly smaller than the state of New York

Niger
slightly less than twice the size of Texas

Nigeria
slightly more than twice the size of California

Niue
1.5 times the size of Washington, DC

Norfolk Island
about 0.2 times the size of Washington, DC

Northern Mariana Islands
2.5 times the size of Washington, DC

Norway
slightly larger than New Mexico

Oman
slightly smaller than Kansas