- Jan 4 Jacobus ".Koot" Opperman, South African Boer general, killed in Battle of Onverwacht, South Africa at 40
- Jan 6 Jan Bloch, Polish military theorist and peace activist, dies at 65
- Jan 9 Gustaaf Rolin-Jaequemyns, Belgian jurist and Minister of the Interior, dies at 66
- Jan 11 Johnny Briggs, English cricket all-rounder (33 Tests; 118 wickets @ 17.75), dies of complications from an epileptic seizure at 39
- Jan 14 Cato M. Guldberg, Norwegian mathematician and chemist (law of mass action), dies at 65
- Jan 15 Alpheus Hyatt, American zoologist and paleontologist, dies at 63
- Jan 17 Gideon Scheepers, South Africa Boer leader, executed
- Jan 18 Filippo Marchetti, Italian opera composer, dies at 70
- Jan 19 Mother Joseph of the Sacred Heart [Esther Pariseau], Canadian religious leader (US capitol), dies at 78
Assassination
Car Crash
Hanging
Killed in Action
Plane Crash
Poisoning