Learn more about 1827
1827 (MDCCCXXVII) was a common year starting on Monday (see link for calendar).
- February 20 - South America: Battle of Ituzaingo or Passo do Rosário - A force of the Brazilian Imperial Army meets in combat Argentinean-Uruguayan troops.
- February 28 - The Baltimore & Ohio Railroad is incorporated, becoming the first railroad in America offering commercial transportation of both people and freight.
- March 7 - Brazilian marines sail up the Rio Negro (Argentina) and attack the temporary naval base of Carmen de Patagones, Argentina. They are defeated by the local citizens.
- March 7 - Shrigley Abduction: Ellen Turner, a wealthy heiress in Cheshire, England is abducted by Edward Gibbon Wakefield, the future politician in colonial New Zealand.
- March 16 - Freedom's Journal, the first African-American owned and published newspaper in the United States, is founded in New York City by John Russwurm.
- April – Ottoman Algeria: Husain Dei slaps the French consul Decalina on the face, eventually leading to war and French rule in Algeria.
- April 7-8 - Battle of Monte Santiago: Naval engagement between a squadron of the Brazilian Imperial Navy and Argentinean vessels. Major Brazilian victory.
- April 10 - UK: George Canning succeeds Lord Liverpool as British Prime Minister.
- July 6 - Greek War of Independence: Treaty of London between France, Britain, and Russia, to demand that the Turks agree to an armistice in Greece.
- July 14 - Kingdom of Hawaii: Diocese of Honolulu founded.
- August 31 - UK: Frederick John Robinson, 1st Viscount Goderich becomes Prime Minister of the UK following the death of Canning.
- October 1 - Russo-Persian War, 1826-1828: The Russians under Ivan Paskevich storm Yerevan, ending a millennium of Muslim domination in Eastern Armenia.
- October 20 - Greek War of Independence: Battle of Navarino. British, French, and Russian Naval Forces destroy the Turko-Egyptian fleet in Greece.
ht:1827 (almanak gregoryen)