October 21, 1876
Battle during the Great Sioux War of 1876
Ottoman constitution of 1876 — first constitution of the Ottoman Empire
Centennial Exposition — first official World's Fair in the United States, in Philadelphia, Pennsylvania
1877 war between buffalo hunters and the Comanche
April Uprising of 1876 — Bulgarian uprising against the Ottoman Empire
Japan–Korea Treaty of 1876 — 1876 unequal treaty which forced the Korea to open the Korean Peninsula to Japanese and foreign trade
1876 military battle fought during the Black Hills War
Battle in Idaho and Montana, part of the Great Sioux War of 1876
1876 battle between the US and Native American tribes
June 1876 battle of the Great Sioux War