From Wikipedia, the free encyclopedia
|Centuries:||18th century – 19th century – 20th century|
|Decades:||1790s 1800s 1810s – 1820s – 1830s 1840s 1850s|
|Years:||1823 1824 1825 – 1826 – 1827 1828 1829|
|1826 in topic:|
|Archaeology – Architecture – Art – Literature – Music|
|Australia – Canada – France – Germany – Mexico – Philippines – South Africa – US – UK|
|Rail Transport – Science – Sports|
|Lists of leaders|
|Colonial Governors – State leaders|
|Birth and death categories|
|Births – Deaths|
|Establishments and disestablishments categories|
|Establishments – Disestablishments|
|Ab urbe condita||2579|
|British Regnal year||6 Geo. 4 – 7 Geo. 4|
— to —丙戌年十二月初三日
|- Vikram Samvat||1882–1883|
|- Shaka Samvat||1748–1749|
|- Kali Yuga||4927–4928|
|- Ǹrí Ìgbò||826–827|
|Japanese calendar||Bunsei 9
|Juche calendar||N/A (before 1912)|
|Julian calendar||Gregorian minus 12 days|
|Minguo calendar||86 before ROC
|Thai solar calendar||2369|
|Wikimedia Commons has media related to: 1826|
- January 30 – The Menai Suspension Bridge, built by engineer Thomas Telford, is opened between the island of Anglesey and the mainland of Wales.
- February 8 – Unitarian Bernardino Rivadavia becomes the first President of Argentina.
- February 11
- February 13 – The American Temperance Society is founded.
- April 1 – Samuel Morey patents an internal combustion engine.
- April 10 – Third Siege of Missolonghi ends with the massacre of thousands of the Greek defenders by the Ottoman besiegers.
- May 28 – Pedro I of Brazil abdicates as King of Portugal.
- June – Photography: Nicéphore Niépce makes a true photograph.
- June 14–15 – The Auspicious Incident: Mahmud II, sultan of Ottoman Empire, crushes the last mutiny of janissaries in Istanbul.
- June 22 – The Pan-American Congress of Panama tries (unsuccessfully) to unify the republics of the Americas.
- Early July – Ludwig van Beethoven puts the finishing touches on the String Quartet in C sharp Minor, Opus 131, the jewel in the crown of his late string quartets.
- July 4 – Former US Presidents Thomas Jefferson and John Adams both die on the 50th Anniversary of the signing of the United States Declaration of Independence.
- July 26 – The last auto-da-fé is held in Valencia.
- August – The town of Crawford Notch suffers a landslide. Those killed include the Willey family, after whom Mount Willey is named.
- August 10 – The first Cowes Regatta is held on the Isle of Wight in the UK.
- August 18 – Explorer Alexander Gordon Laing becomes the first European to reach Timbuktu.
- September 21 – Construction of the Rideau Canal begins in Canada.
- October 1 – Opening of the Monkland and Kirkintilloch Railway in Scotland.
- October 7 – The first train operates over the Granite Railway in Massachusetts.
- December 25
- The Eggnog Riot breaks out at the United States Military Academy in West Point, New York during the early morning hours, but is squelched by Christmas chapel service.
- Major Edmund Lockyer arrives at King George Sound to take possession of the western part of Australia, establishing a settlement near Albany.
Date unknown 
- The first railway tunnel is built en route between Liverpool and Manchester in England.
- The British crown colony of the Straits Settlements is established.
- Aniline is first isolated from the destructive distillation of indigo by Otto Unverdorben.
- Ludwig Van Beethoven composes the Grosse Fuge.
- Mahmud II's council orders the janissaries to drill in the European manner.
- Britain annexes Assam.
- January 12 – William Chapman Ralston, banker and financier (d. 1875)
- January 26 – Louis Favre, Swiss engineer (d. 1879)
- January 27
- January 30 – Robert F. R. Lewis, American naval officer (d. 1881)
- February 7 – James Edward Jouett, American admiral (d. 1902)
- February 16
- March 4
- March 24 – Matilda Joslyn Gage, pioneering feminist (d. 1898)
- March 29 – Wilhelm Liebknecht, German journalist and politician (d. 1900)
- April 6 – Gustave Moreau, French painter (d. 1898)
- April 26 – George Hull Ward, American general (d. 1863)
- May 3 – King Charles XV of Sweden and Norway (d. 1872)
- May 4 – Frederic Edwin Church, American painter (d. 1900)
- June 24 – George Goyder, surveyor-general of South Australia (d. 1898)
- July 4
- July 31 – William S. Clark, American chemist and 3rd President of the Massachusetts Agricultural College
- August 7 – Samuel McLean, American congressman (d. 1877)
- September 17 – Bernhard Riemann, German mathematician (d. 1866)
- November 13 – Charles Frederick Worth, English couturier (d. 1895)
- November 24 – Carlo Collodi, Italian writer (d. 1890)
- November 27 – Jonathan Young, United States Navy commodore (d. 1885)
- December 3 – George B. McClellan, American general (d. 1885)
Date unknown 
- William Daniel (politician), American temperance movement leader (d. 1897)
- Cetshwayo kaMpande, Zulu king (d. 1884)
- January 3 – Louis Gabriel Suchet, French marshal (b. 1770)
- January 17 – Juan Crisóstomo Arriaga, Spanish composer (b. 1806)
- March 29 – Johann Heinrich Voß, German poet (b. 1751)
- April 25 – Karl Ludwig von Phull, German military leader (b. 1757)
- May 7 – Sophie Hagman, Swedish ballerina and royal mistress (b. 1758)
- May 16 – Elisabeth Alexeievna (Louise of Baden), Empress Consort of Russian Emperor Alexander I (b. 1779)
- May 16 – Joseph Holt (rebel), 1798 United Irish Rebel General (b. 1756)
- June 3 – Nikolay Karamzin, reformer of the Russian language (b. 1766)
- June 5 – Carl Maria von Weber, German composer (b. 1786)
- July 4
- July 5 – Stamford Raffles, British colonial governor and founder of Singapore (b. 1781)
- July 8 – Luther Martin, delegate to the American Constitutional Convention (b. 1746)
- July 22 – Giuseppe Piazzi, Italian astronomer (b. 1746)
- August 13 – René Laennec, French physician (b. 1781)
- November 23 – Johann Elert Bode, German astronomer (b. 1747)
- "Icons, a portrait of England 1820-1840". Archived from the original on 22 September 2007. Retrieved 2007-09-12.
- Penguin Pocket On This Day. Penguin Reference Library. 2006. ISBN 0-14-102715-0.
- Awdry, Christopher (1990). Encyclopaedia of British Railway Companies. Wellingborough: Patrick Stephens Ltd. ISBN 1-85260-049-7.
- "Granite Railway". Britannica Online Encyclopedia. Retrieved 2008-05-19.
- "The First Railroad in America". Catskill Archive. Granite City B.P.O.E. - Quincy Lodge No. 943. 1924. Retrieved 2008-05-19.