- Oct 1 Henri Bertini, French classical composer and pianist, dies at 77
- Oct 1 James Lick, American land baron in California, dies at 80
- Oct 7 Georg Heinrich Pertz, German historian, dies at 81
- Oct 10 Charles Joseph Sainte-Claire Deville, French geologist (b. 1814)
- Oct 18 Francis Preston Blair, American journalist and newspaper editor (Washington Globe), dies at 85
- Oct 20 Jeronimo de Bosch Kemper, Dutch sociologist and historian, dies at 68
- Oct 29 Jacques Gregoir, Belgian composer and pianist, dies at 59
Assassination
Drug Overdose
Gunshot Wound
Murder
Plane Crash
Suicide