- The United States: The United States is a republic, which means that it is governed by elected representatives rather than a monarch. The head of state in the United States is the President.
- France: France is a republic and has been since the French Revolution in 1789. The head of state in France is the President.
- Germany: Germany is a republic and has been since the end of World War I in 1918. The head of state in Germany is the President.
- India: India is a republic and has been since it gained independence from the United Kingdom in 1947. The head of state in India is the President.
- China: China is a republic and has been since the Chinese Communist Revolution in 1949. The head of state in China is the President.
- Cuba: Cuba is a socialist state and has been since the Cuban Revolution in 1959. The head of state in Cuba is the President.
- North Korea: North Korea is a communist state and has been since the end of the Korean War in 1953. The head of state in North Korea is the Chairman of the State Affairs Commission.
- South Korea: South Korea is a republic and has been since 1948. The head of state in South Korea is the President.
- Australia: Australia is a constitutional monarchy, but it does not have a king. Instead, the head of state is the Queen of Australia, who is currently Queen Elizabeth II.
- Canada: Canada is a constitutional monarchy, but it does not have a king. Instead, the head of state is the Queen of Canada, who is currently Queen Elizabeth II.
- New Zealand: New Zealand is a constitutional monarchy, but it does not have a king. Instead, the head of state is the Queen of New Zealand, who is currently Queen Elizabeth II.