1874 1875 1876 - 1877 - 1878 1879 1880
1840s 1850s 1860s - 1870s - 1880s 1890s 1900s
Events of 1877
- January 1 – Queen Victoria is proclaimed Empress of India by the Royal Titles Act 1876, introduced by Benjamin Disraeli, the Prime Minister of the United Kingdom .
- January 8 – Indian Wars – Battle of Wolf Mountain: Crazy Horse and his warriors fight their last battle with the United States Cavalry in Montana.
- January 20 – The Conference of Constantinople ends with Ottoman Turkey rejecting proposals of internal reform and Balkan provisions.
- March 2 – In the Compromise of 1877, the U.S. presidential election, 1876 is resolved with the selection of Rutherford B. Hayes as the winner, even though Samuel J. Tilden had won the popular vote on November 7, 1876.
- March 4
- March 15 – 1877 Australia v. England series: The first Test cricket match is held between England and Australia.
- March 24 – For the only time in history, the Boat Race between the Universities of Cambridge and Oxford is declared a "dead heat" (i.e. a draw).
- April 24 – Russo-Turkish War, 1877–1878: Russia declares war on the Ottoman Empire.
- May 5 – Indian Wars: Sitting Bull leads his band of Lakota into Canada to avoid harassment by the United States Army under Colonel Nelson Miles.
- May 6 – Realizing that his people are weakened by cold and hunger, Chief Crazy Horse of the Oglala Sioux surrenders to United States troops in Nebraska.
- May 8 – At Gilmore's Gardens in New York City, the first Westminster Kennel Club Dog Show opens (ends May 11).
- May 16 – The May 16, 1877 political crisis occurs in France.
- May 21 – (May 9 O.S.) – Romania declares itself independent from the Ottoman Empire (recognized in 1878 after the end of the Romanian independence war).
- May 31 – Brantford, Ontario, Canada is officially incorporated as a city.
- June 17 – Indian Wars – Battle of White Bird Canyon: The Nez Perce defeat the U.S. Cavalry at White Bird Canyon in the Idaho Territory.
- June 21 – The Molly Maguires are hanged at Carbon County Prison in Jim Thorpe, Pennsylvania.
- June 26 – The eruption of Mount Cotopaxi in Ecuador causes severe mudflows that wipe out surrounding cities and valleys, killing 1,000.
- June 30 – The British Mediterranean fleet is sent to Besika Bay.
- July 9 – The All England Lawn Tennis and Croquet Club begins its first lawn tennis tournament at Wimbledon.
- July 10 – The then villa of Mayagüez, Puerto Rico formally receives its city charter from the Royal Crown of Spain.
- July 16 – Great railroad strike of 1877: Riots by Baltimore and Ohio Railroad railroad workers in Baltimore, Maryland lead to a sympathy strike and rioting in Pittsburgh, and a full-scale worker's rebellion in St. Louis, briefly establishing a Communist government before U.S. President Rutherford B. Hayes calls in the armed forces.
- July 19 – Russo-Turkish War, 1877–1878: The first battle in the Siege of Pleven is fought.
- July 30 – The second battle in the Siege of Pleven is fought.
- August 9 – Indian Wars – Battle of Big Hole: Near Big Hole River in Montana, a small band of Nez Percé Indians who refused government orders to move to a reservation, clash with the United States Army. The army loses 29 soldiers and Indians lose 89 warriors in a U.S. Army victory.
- August 11 – Asaph Hall discovers Deimos, the outer moon of Mars.
- August 17 – Arizona blacksmith F.P. Cahill is fatally wounded by Billy the Kid. Cahill dies the next day, becoming the first person killed by the Kid.
- August 18 – Asaph Hall discovers Phobos, the inner moon of Mars.
- September 1 – The Battle of Lovcha, third battle in the Siege of Pleven, is fought.
- September 5 – Indian Wars: Oglala Sioux chief Crazy Horse is bayoneted by a United States soldier, after resisting confinement in a guardhouse at Fort Robinson in Nebraska.
- October 10 – Following the recovery of Lieutenant-Colonel George Armstrong Custer's body from where he fell during the Battle of Little Big Horn the previous year, Custer is given a funeral with full military honors and is laid to rest at the United States Military Academy at West Point, New York.
- October 22 – The Blantyre mining disaster in Scotland kills 207 miners.
- November 21 – Thomas Edison announces his invention of the phonograph, a machine that can record sound, considered Edison's first great invention. Edison demonstrates the device for the first time on November 29.
- November 22 – The first college lacrosse game is played between New York University and Manhattan College.
- December 9 – The fourth battle of the Russo-Turkish War, 1877–1878 is fought, concluding the Siege of Pleven.
- December 14 – Serbia restates its previous declaration of war against Turkey.
- March 12 - Wilhelm Frick - German National Socialist government minister (d. 1946)
- October 13 - Theodore G. Bilbo - American segregationist politician (d. 1947)