Mexico
slightly less than three times the size of Texas

Micronesia, Federated States of
four times the size of Washington,
DC (land area only)

Midway Islands
about nine times the size of The Mall in Washington,
DC

Moldova
slightly larger than Maryland

Monaco
about three times the size of The Mall in Washington, DC

Mongolia
slightly smaller than Alaska

Montenegro
slightly smaller than Connecticut

Montserrat
about 0.6 times the size of Washington, DC

Morocco
slightly larger than California

Mozambique
slightly less than twice the size of California