China, obviously.
cuba china etc .there are different islands with a communist government
Bulgaria.
China China's population is the largest in the world.
A ‘Communist government’ is a contradiction in terms, as Communism means no classes and no government and no money. The question presumably refers to the state capitalist system set up under Bolshevik rule in many places.
China is state capitalist, not Communist (which would mean no money or classes or government).
Government
The closet i could get was the indian communist government group
The nation of Montenegro used to be part of Yugoslavia, and it therefore had a communist government during the period of 1945 - 1990, between the end of WW II and the fall of communism in Europe.
North Korea attacked Korea in 1950
The North Vietnamese took over the south and reunified the nation under a communist government.
During that time period Russia was a Communist nation.