What are countries that are ruled by one person called?

Countries ruled by one person are typically referred to as autocracies or dictatorships. In such systems, power is concentrated in the hands of a single leader who often has authoritarian control, limiting political pluralism and civil liberties. Examples include North Korea under Kim Jong-un and Belarus under Alexander Lukashenko. These regimes may maintain power through various means, including censorship, Propaganda, and repression of dissent.