The alphamegalog of the countries of the Americas (i.e., the western hemisphere, including North, Central, and South America, and the Caribbean Islands) lists the largest country in the Americas for each letter of the alphabet; ‘largest’ is based on the country‘s population.

Argentina
Brazil
Colombia
The Dominican Republic
Ecuador
(no F)
Guatemala
Haiti
(no I)
Jamaica
(no K)
(no L)
Mexico
Nicaragua
(no O)
Peru
(no Q)
(no R)
Suriname
Trinidad and Tobago
The United States of America
Venezuela
(no W)
(no X)
(no Y)
(no Z)