Leaders of the world through history

Secretaries-general of the United Nations (1946–)

The Americas

Canada

Prime ministers of Canada (1867–)

The United States of America

Presidents and vice presidents of the United States (1789–) [Includes elections]

Asia

Saudi Arabia

Kings of Saudi Arabia (1932–)

Israel

Prime ministers of the State of Israel (1948–)

India

Prime ministers of the Republic of India (1947–)

China

Paramount leaders of the People’s Republic of China (1949–)

North Korea

Supreme leaders of the Democratic People’s Republic of North Korea (1948–)

Taiwan

Presidents of the Republic of China (1950–) [Includes elections]

Indonesia

Presidents of the Republic of Indonesia (1945–)

Europe

Presidents of the European Commission (1958–)

The United Kingdom

Kings and queens of England (871–1707)
Kings and queens of the United Kingdom (1707–)
Prime ministers of the United Kingdom (1945–) [includes elections]
First ministers of Scotland (1999–) [includes elections]
First ministers of Wales (1999–) [includes elections]
First ministers and deputy first ministers of Northern Ireland (1998–)

Ireland

Taoisigh of the republic of Ireland (1937–)

The Netherlands

Kings and queens of the Netherlands (1815–)
Premiers of the Netherlands (1948–)

France

Presidents of the fifth French Republic (1958–) [includes elections]

Germany

Chancellors of the Federal Republic of Germany (1949–)

Russia

Leaders of the Union of Soviet Socialist Republics (1922–1991)
Presidents of the Russian Federation (1991–)

Oceania

Australia

Prime ministers of the Commonwealth of Australia (1949–)

New Zealand

Prime ministers of New Zealand (1935–)