The map that accompanies this question shows all of the Communist countries that existed in the 1980s. Currently, only Cuba is a true Communist country. Cambodia, Vietnam, and China are Leninst Capitalist States that are dominated by "Communist" Parties. North Korea is a supernationalist fascist state with a political dynasty that uses the appellation "communist" even though it has none of the economic policies that would characterize communism. The rest of the countries on this map have either (1) embraced democracy (like Poland, Mongolia, and Angola), (2) have had violent changes of government (like Eritrea, Somalia, and Afghanistan), or (3) ceased to exist as countries (like the Soviet Union or South Yemen).
No, it isn't a communist country.
No, Chad is not a communist country.
London is not a country. It is a city. It is in England, which is not a communist country.
No, Iceland is not a communist country.
Yugoslavia is no longer a country. Before its breakup it was a Communist country.
Thailand is not a Communist Country
China is a communist country.
No, Brunei is not a communist country.
No, it isn't a communist country.
if you are talking about Korea , north Korea yes, it is a communist country.
Cuba is the only communist country in the western Hemisphere.
South Korea was not a communist country in 1975.