The World of Statistics page lists the heads of state killed and executed since 1900.

In a post on the X social network from the World of Statistics page, this is the list of heads of state killed and executed:

The King of Italy (1900)
US President (1901)
The King of Serbia (1903)
Prime Minister of Serbia (1903)
Prime Minister of Bulgaria (1907)
The King of Portugal (1908)
The Emperor of China (1908)
Prime Minister of Egypt (1910)
Prime Minister of Russia (1911)
President of the Dominican Republic (1911)
Prime Minister of Spain (1912)
President of El Salvador (1913)
President of Mexico (1913)
King of Greece (1913)
President of Haiti (1915)
President of Portugal (1918)
Emir of Afghanistan (1919)
The Supreme Ruler of Russia (1920)
President of Mexico (1920)
Prime Minister of Spain (1921)
Prime Minister of Portugal (1921)
Prime Minister of Japan (1921)
President of Poland (1922)
Prime Minister of Bulgaria (1923)
Governor of Sudan (1924)
President of Ukraine (1926)
The President of China (1928)
President of France (1932)
Prime Minister of Japan (1932)
President of Peru (1933)
The King of Afghanistan (1933)
Prime Minister of Romania (1933)
Chancellor of Austria (1934)
King of Yugoslavia (1934)
Prime Minister of Romania (1939)
Prime Minister of Egypt (1945)
President of Bolivia (1946)
Prime Minister of Burma (1947)
The Imam of Yemen (1948)
Prime Minister of Egypt (1948)
President of Syria (1949)
Prime Minister of Syria (1949)
Prime Minister of Iran (1949)
President of Syria (1950)
President of Venezuela (1950)
Prime Minister of Iran (1951)
King of Jordan (1951)
Prime Minister of Pakistan (1951)
President of Panama (1955)
President of Nicaragua (1956)
President of Guatemala (1957)
Prime Minister of Jordan (1958)
King of Iraq (1958)
Prime Minister of Jordan (1960)
Prime Minister of Ethiopia (1960)
President of the Dominican Republic (1961)
Prime Minister of Burundi (1961)
President of Togo (1963)
Prime Minister of Iraq (1963)
President of the Republic of Vietnam (1963)
US President (1963)
Prime Minister of Bhutan (1964)
Prime Minister of Iran (1965)
Prime Minister of Nigeria (1966)
Head of State of Nigeria (1966)
Prime Minister of South Africa (1966)
President of Somalia (1969)
Prime Minister of Jordan (1971)
President of Zanzibar (1972)
Prime Minister of Spain (1973)
President of Madagascar (1975)
The King of Saudi Arabia (1975)
The President of Chad (1975)
Prime Minister of Cambodia (1975)
President of Bangladesh (1975)
Prime Minister of Bangladesh (1975)
Head of State of Nigeria (1976)
President of the Congo (1977)
President of North Yemen (1977)
President of Afghanistan (1978)
President of the Comoros (1978)
President of North Yemen (1978)
Prime Minister of Guinea-Bissau (1978)
President of South Korea (1979)
President of Liberia (1980)
Prime Minister of Kyrgyzstan (1980)
Prime Minister of Portugal (1980)
President of Bangladesh (1981)
Prime Minister of Iran (1981)
President of Iran (1981)
President of Egypt (1981)
Elected President of Lebanon (1982)
Prime Minister of Grenada (1983)
Prime Minister of India (1984)
President of Palau (1985)
Prime Minister of Sweden (1986)
Prime Minister of Lebanon (1987)
President of Burkina Faso (1987)
President of Lebanon (1989)
President of the Comoros (1989)
President of Romania (1989)
President of Liberia (1990)
President of Algeria (1992)
President of Sri Lanka (1993)
President of Burundi (1993)
President of Rwanda (1994)
President of Burundi (1994)
Prime Minister of Rwanda (1994)
Prime Minister of Israel (1995)
President of Niger (1999)
Prime Minister of Armenia (1999)
President of DR Congo (2001)
King of Nepal (2001)
Prime Minister of Serbia (2003)
Prime Minister of Lebanon (2005)
President of Guinea-Bissau (2009)
The President of Chad (2021)
President of Haiti (2021)

? List of assassinated and executed heads of state and government since 1900:

?? King of Italy (1900)
?? President of the US (1901)
?? King of Serbia (1903)
?? Prime Minister of Serbia (1903)
?? Prime Minister of Bulgaria (1907)
?? King of Portugal (1908)
?? Emperor of China…

— World of Statistics (@stats_feed) May 20, 2024