List of state leaders in 1818
1817 state leaders - Events of 1818 - 1819 state leaders - State leaders by year
Africa
- Adamawa Emirate - Modibo Adama, Emir of Adamwa (1809–1847)
- Ashanti Confederacy - Osei Bonsu, Asantehene (1804–1824)
- Buganda - Kamaya, King of Buganda (1814–1836)
- Bunyoro - Nyamutukura Kyebambe III, Omukama of Bunyoro (1786–1835)
- Burundi - Ntare IV Rugamba, King of Burundi (1796–1852)
- Dahomey -
- Adandozan, King of Dahomey (1797–1818)
- Gézo, King of Dahomey (1818–1856)
- Ethiopia -
- Egwale Seyon, Emperor of Ethiopia (1801–1818)
- Iyoas II, Emperor of Ethiopia (1818–1821)
- Ilorin Emirate - Oba Afonja, Emir of Ilorin (1817–1824)
- Ndzuwani - Abdallah bin Alawi, Sultan of Ndzuwani (1816–1832)
- Rwanda - Yuhi III, Mwami of Rwanda (1797–1830)
- Sokoto Caliphate
- Swaziland - King Sobhuza I (1815–1836? 1839?)
- Zulu - Shaka, King of the Zulu (1816–1828)
Americas
Asia
Australia and Oceania
Europe
- Abkhazia - Safar Begi, Prince of Abkhazia (1810–1821)
- Andorra -
- Denmark
- Finland -
- France -
- German Confederation
- Hungary - Francis, King of Hungary (1792–1835)
- Moresnet
- United Kingdom of the Netherlands - William I, King of the Netherlands (1815–1840)
- Norway - United Kingdoms of Sweden and Norway - Kingdom of Sweden-Norway
- Ottoman (Turkish) Empire
- Papal States - Pius VII, Pope (1800–1823)
- Portugal - John VI, King of Portugal (1816–1826)
- Russia - Alexander I, Tsar of Russia (1801–1825)
- Spain - Ferdinand VII, King of Spain (1808, 1814–1833)
- Sweden - United Kingdoms of Sweden and Norway -
- Charles XIII, King of Sweden (1809–1818)
- Charles XIV John, King of Sweden (1818–1844) (Regent 1810-1818)
- Tuscany - Ferdinand III, Grand Duke of Tuscany (1814–1824)
- Two Sicilies - Ferdinand I, King of the Two Sicilies (1816–1825)
- United Kingdom
Middle East and North Africa
- Abu Dhabi -
- Muhammad bin Shakhbut, Shaikh of Abu Dhabi (1816–1818)
- Shaikhdom under joint rulership
- Ajman - Rashid bin Humayd, Shaikh of Ajman (1816–1838)
- Bahrain - Shiekh Sulman ibn Ahmad Al Khalifah, Ruler of Bahrain (1796–1825)
- Egypt - Muhammad Ali Pasha, Governor of Egypt (1805–1848)
- Kel Ahaggar - Ag Mama ag Sidi, Ruler of Kel Ahaggar (1790–1830)
- Kuwait - Sheikh Jabir ibn Abdullah Al Sabah, Ruler of Kuwait (1814–1859)
- Lebanon - Bashir ibn al-Qasim ibn Umar, Emir of Lebanon (1801–1821)
- Morocco - Slimane, Sultan of Morocco (1792–1822)
- Oman - Sa'id II ibn Sultan, Sultan of Oman (1804–1856)
- Persia - Fat′h Ali Shah Qajar, Shah of Persia (1797–1834)
- Tunis (under Ottoman suzerainty) - Mahmud, Bey of Tunis (1814–1824)