14 notable events from 1804.
- 1804 Haitian massacre
Jan 1804–Apr 22, 1804 · Haiti
- Burr conspiracy
1804–1806 · United States
- First Serbian Uprising
Feb 14, 1804–Oct 7, 1813 · Serbia
- Slaughter of the Knezes
Jan 23, 1804–Jan 29, 1804 · Serbia
- Serbian Revolution
Feb 15, 1804 · North Macedonia
- Castle Hill convict rebellion
Mar 4, 1804–Mar 5, 1804 · Australia
- 1804 Kisakata earthquake
Jul 10, 1804 · Japan
- Siege of Ganja (1804)
Jan 15, 1804 · Azerbaijan
- 1804 Risdon Cove massacre
from May 3, 1804 · Australia
- 1804 Ahr flood
Jul 21, 1804 · Germany
- Raid on Boulogne
Oct 2, 1804–Oct 3, 1804 · France
- 1804 Mtiuleti rebellion
from 1804 · Georgia
- 1804 Almería earthquake
Aug 25, 1804 · Spain
- 1804 Volkach city fire
1804 · Germany