List of state leaders in 1865
List of state leaders in 1864 - Events of 1865 - List of state leaders in 1866 - State leaders by year
Africa
Asia
Europe
- Austria - Franz Joseph I, Emperor of Austria (1848-1916)
- Belgium
- Leopold I, King of the Belgians (1831-1865)
- Leopold II, King of the Belgians (1865-1909)
- Denmark
- France - Napoleon III, Emperor of the French (1852-1870)
- German Confederation - Franz Joseph of Austria, President of the German Confederation (1850-1866)
- Holy See - Pope Pius IX (1846-1878)
- Italy -
- Netherlands - William III, King of the Netherlands (1849-1890)
- Norway - Carl IV, King of Norway (1859-1872)
- Ottoman Empire - Abd-ul-Aziz, Sultan of the Ottoman Empire (1861-1876)
- Portugal - Luis, King of Portugal (1861-1889)
- Prussia -
- Romania - Alexander John Cuza, Prince of Romania (1859-1866)
- Russia - Alexander II, Tsar of Russia (1855-1881)
- Spain - Isabella II, Queen of Spain (1833-1868)
- Sweden - Kingdom of Sweden-Norway
- United Kingdom
Middle East and North Africa
North America and Caribbean
List of state leaders in 1864 - Events of 1865 - List of state leaders in 1866 - State leaders by year