January 1, 1881
Boundary Treaty between Argentina and Chile, signed on 23 July 1881
Tour by King Kalākaua of the Hawaiian Kingdom
1881 treaty between the Russian Empire and the Qing dynasty
Battle of the War of the Pacific
1881 battle during the War of the Pacific
1881 military action during the first Anglo-Boer War
Major battle fought at Laing's Nek during the First Boer War on 28 January 1881
1881 battle during the First Boer War
1881 final battle of the First Boer War
1881 battle fought in Kosovo