Antigua and Barbuda
2.5 times the size of Washington, DC
Arctic Ocean
slightly less than 1.5 times the size of the US
Argentina
slightly less than three-tenths the size of the US
Armenia
slightly smaller than Maryland
Aruba
slightly larger than Washington, DC
Ashmore and Cartier Islands about eight times the size of The Mall in Washington, DC
Atlantic Ocean
slightly less than 6.5 times the size of the US
Australia
slightly smaller than the US contiguous 48 states
Austria
slightly smaller than Maine
Azerbaijan
slightly smaller than Maine