List of state leaders in the 20th century

This is a list of the leaders of autonomous states in the 20th century (1901–2000) AD, such as the heads of state, heads of government, and the general secretaries of single-party states.

These polities are generally sovereign states, including states with limited recognition (when recognised by at least one UN member state), but excludes minor dependent territories, whose leaders can be found listed under territorial governors in the 20th century. For completeness, these lists can include colonies, protectorates, or other dependent territories that have since gained sovereignty.

Angola

Cameroon

Central African Republic

Chad

Congo (Léopoldville)

Congo (Brazzaville)

Guinea

Gabon

São Tomé and Príncipe

Vietnam

Bahrain

Cyprus

Iran

Iraq

Israel

Jordan

Kuwait

Lebanon

Oman

Palestine

Qatar

Saudi Arabia

Syria

Turkey

United Arab Emirates

Yemen