31 notable events from 1878.
- Great Mill Disaster
May 2, 1878 · United States
- Lincoln County War
Feb 18, 1878–Jul 19, 1878 · United States
- Kioichō Incident
May 14, 1878 · Japan
- Sinking of SS Princess Alice
until Sep 3, 1878 · United Kingdom
- Takebashi incident
Aug 23, 1878 · Japan
- Hödel assassination attempt
May 11, 1878 · Germany
- 1878 Kanak revolt
Dec 1, 1878 · New Caledonia
- Bochum lust murders
1878–1882 · Germany
- Northern Cheyenne Exodus
1878 · United States
- Harmanli massacre
Jan 17, 1878 · Bulgaria
- 1878 St. Croix labor riot
from 1878 · Virgin Islands
- 1878 Wallingford tornado
Aug 9, 1878 · United States
- Nobiling assassination attempt
Jun 2, 1878 · Germany
- Oshambe drift
Dec 24, 1878 · Japan
- Lynching of Charlotte Harris
Mar 6, 1878 · United States
- Abercarn colliery disaster
Sep 11, 1878 · United Kingdom
- Cretan revolt (1878)
Jan 1878–Oct 1878 · Greece
- Mado incident
1878 · Japan
- Murder of Elizabeth Chantrelle
Jan 2, 1878 · United Kingdom
- 1878 Macedonian rebellion
Feb 19, 1878–Jul 13, 1878 · Greece
- Kumanovo uprising
Jan 20, 1878–May 20, 1878 · North Macedonia
- Çırağan incident
May 20, 1878 · Türkiye
- Epirus Revolt of 1878
1878 · Greece
- Montceau-les-Mines troubles
Jan 27, 1878–1885 · France
- Assassination of Manuel Pardo
Nov 16, 1878 · Peru
- 1878 Tariffville train crash
Jan 15, 1878 · United States
- Karewan Incident
1878 · Taiwan
- Wollaston disaster
Oct 8, 1878 · United States
- War of Laleia
1878–1880 · —
- Ermesinde rail disaster
Oct 11, 1878 · Portugal
- Attacks on Serbs during the Serbian–Ottoman Wars
1878 · Kosovo