All 35 independent nations of the Americas

Americas

The Americas, or America , are lands in the Western hemisphere, also known as the New World. In English, the plural form the Americas is often used to refer to the landmasses of North America and South America with their associated islands and regions, while the singular form America is primarily...

 are member states of the Organization of American States

Organization of American States

The Organization of American States is a regional international organization, headquartered in Washington, D.C., United States...

 (OAS). Upon foundation on 5 May 1948 there were 21 members:Suspended between 1962–2009. Has chosen not to reapply for participation.Suspended in 2009.
The later expansion of the OAS included the newly independent nations of the Caribbean (most of whom gained independence only after World War II

World War II

World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

) and Canada

Canada

Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

. Members with later admission dates (sorted chronologically):
(member since 1967) (1967) (1969) (1975) (1977) (1979) (1979) (1981) (1981) (1982) (1984) (1990) (1991) (1991)