1851 state leaders - Events of 1852 - 1853 state leaders - State leaders by year

Africa

• Ashanti Confederacy - Kwaku Dua I Panyin, Asantehene (1834-1867)
• Buganda - Suna II, King of Buganda (1836-1856)
• Bunyoro -
  1. Olimi V, Omukama of Bunyoro (1848-1852))
  2. Kyebambe IV, Omukama of Bunyoro (1852-1869))
• Burundi -
  1. Ntare IV Rugamba, King of Burundi (1796-1852)
  2. Mwezi IV Gisabo, King of Burundi (1852-1908)
• Dahomey - Ghezo, King of Dahomey (1818-1856)
• Liberia - Joseph Jenkins Roberts, President of Liberia (1848-1856)
• Rwanda - Mutara II Rwogera, King of Rwanda (1830-1853)
• Sokoto Caliphate
  • Caliph - Ali bin Bello I, Sokoto Caliph (1842-1859)
  • Grand Vizier - Abd al-Qadir, Sokoto Grand Vizier (1842-1859)
• Zulu - Mpande kaSenzangakhona, King of the Zulu (1840-1872)

Asia

• Afghanistan - Dost Mohammad Khan, King of Afghanistan (1843-1863)
• China
  • Qing Dynasty - Xianfeng, Emperor of China (1850-1861)
  • Heavenly Kingdom of Taiping - Hong Xiuquan, King of Heaven (1851-1864)
• Japan
  • Monarch - Kōmei, Emperor of Japan (1846-1867)
  • Shogun (Tokugawa) - Tokugawa Ieyoshi, Shogun of Japan (1837-1853)
  • Ryūkyū Kingdom - Shō Tai, King of Ryūkyū (1848-11 March 1879)
• Korea (Joseon Dynasty) - Cheoljong, King of Joseon (1849-1864)

Europe

• Abkhazia - Mikheil, Prince of Abkhazia (1822-1864)
• Belgium
  • Monarch - Léopold I, King of the Belgians (1831-1865)
  • Cabinet Chief -
    1. Charles Rogier, Cabinet Chief of Belgium (1832-1834, 1847-1852, 1857-1868)
    2. Henri de Brouckère, Cabinet Chief of Belgium (1852-1855)
• Denmark
  • Monarch - Frederick VII, King of Denmark (1848-1863)
  • Prime Minister -
    1. Adam Wilhelm, Prime Minister of Denmark (1848-1852)
    2. Christian Albrecht Bluhme, Prime Minister of Denmark (1852-1853)
• France -
  • President - Louis Napoleon Bonaparte, President of France (1848-1852), became
  • Monarch - Napoleon III, Emperor of the French (1852-1870)
• German Confederation - Franz Joseph of Austria, President of the German Confederation (1850-1866)
  • Austria - Franz Joseph I, Emperor of Austria (1848-1916)
  • Luxembourg
    • Monarch - William III, King of the Netherlands (1849-1890)
    • Prime Minister - Jean-Jacques Madelaine Willmar, Prime Minister of Luxembourg (1848-1853)
  • Prussia -
    • Monarch - Friedrich Wilhelm IV, King of Prussia (1840-1861)
    • Prime Minister - Otto von Manteuffel, Minister-President of Prussia (1850-1858)
  • Bavaria - Maximilian II, King of Bavaria (1848-1864)
  • Saxony - Frederick Augustus, King of Saxony (1836-1854)
  • Hanover - George, King of Hanover (1851-1866)
  • Württemberg - William, King of Württemberg (1816-1864)
• Hungary - Franz Joseph I of Austria, King of Hungary (1848-1916)
• Netherlands
  • Monarch - William III, King of the Netherlands (1849-1890)
  • Prime Minister - Jan Rudolf Thorbecke, Chairman of the Dutch council of ministers (1849-1853, 1862-1866, 1871-1872)
• Portugal - Maria II, Queen of Portugal (1826-1828, 1834-1853)
• Russia - Nicholas I, Tsar of Russia (1825-1855)
• Spain - Isabella II, Queen of Spain (September 29, 1833-1868)
• Sweden - United Kingdoms of Sweden and Norway - Oscar I, King of Sweden (1844-1859)
• Two Sicilies - Ferdinand II, King of the Two Sicilies (1830-1859)
• United Kingdom
  • Monarch - Victoria, Queen of Great Britain and Ireland (1837-1901)
  • Prime Minister -
    1. Lord John Russell, Prime Minister of the United Kingdom (1846-1852)
    2. The Earl of Derby, Prime Minister of the United Kingdom (1852)
    3. The Earl of Aberdeen, Prime Minister of the United Kingdom (1852-1855)

Middle East and North Africa

• Egypt - Abbas I, Governor of Egypt (1849-1854)
• Kuwait - Sheikh Jabir ibn Abdullah Al Sabah, Ruler of Kuwait (1814-1859)
• Morocco - Abderrahmane, Sultan of Morocco (1822-1859)
• Oman - Sa'id II ibn Sultan, Sultan of Oman (1804-1856)
• Ottoman Empire
  • Monarch - Abd-ul-Mejid, Sultan of the Ottoman Empire (1839-1861)
  • Grand Vizier -
    1. Mustafa Resid Pasha, Ottoman Grand Vizier (1848-1852)
    2. Mehmed Emin Rauf Pasha, Ottoman Grand Vizier (1852)
    3. Mustafa Resid Pasha, Ottoman Grand Vizier (1852)
    4. Mehmed Emin Ali Pasha, Ottoman Grand Vizier (1852)
    5. Damad Mehmed Ali Pasha, Ottoman Grand Vizier (1852-1853)

North America

• Costa Rica - Juan Rafael Mora Porras, President of Costa Rica (1849–1859)
• Mexico: Mariano Arista, President of Mexico (1851–1853)
• United States: Millard Fillmore, President of the United States (1850–1853)

Oceania

• Hawaii - Kamehameha III, King of Hawaii (1823-1854)
• Tonga - Tāufaʻāhau, Tu'i Kanokupolu (1845-1893)

South America

• Brazil - Pedro II, Emperor of Brazil (1831-1889)
• Uruguay -
  1. Joaquín Suárez, President of Uruguay (1843-1852)
  2. Bernardo Berro, President of Uruguay (1852)
  3. Juan Francisco Giró, President of Uruguay (1852-1853)