The countries of the world that have command economies are the countries that have authoritarian or totalitarian governments. Of course, essentially all countries’ economies have aspects of command economies. However, the countries that come closest to having purely command economies are the ones whose governments are most totalitarian.
The countries whose economies are closest to true command economies are the countries whose governments have the greatest amount of power. Perhaps the best example of this is North Korea. Cuba’s economy is also close to being a pure command economy. The economy of Venezuela has been moving further in the direction of a command economy over the time that Hugo Chavez and his successor, Nicolas Maduro, have been in power.
Some people might say that countries like China have command economies. However, this is not completely accurate. China does have a strong command component to its economy, but there are also powerful market forces at work in the country. China has modernized its economy too much to have a true command economy.