- Aug 1 Claude Newberry, South African cricket All-rounder (v England 1913-14), dies
- Aug 2 Hamish MacCunn, Scottish composer (The Land of the Mountain and the Flood), and teacher, dies at 48
- Aug 3 Roger Casement, Irish diplomat, ardent Irish nationalist (Easter uprising 1916) and poet, hanged after conviction for treason by the British at 51
- Aug 5 George Butterworth, English composer, dies at 31
- Aug 5 Nikolay Ivanovich Kazanli, Russian composer, dies at 46
- Aug 7 Charles E. Manning, Australian judge and major, dies in battle at 36
- Aug 9 Lily Braun [Amalie von Kretschmann], German feminist writer (Im Schatten Titanen), and socialist politician, dies from complications of a stroke at 51
- Aug 13 Fritz Steinbach, German conductor and composer, dies at 61
- Aug 17 Umberto Boccioni, Italian painter and sculptor (Unique Forms of Continuity in Space), dies in a military training mishap at 33
- Aug 18 Edward D Pain, English journalist (NY World), dies in battle at 36
- Aug 28 Francis Warre-Cornish, English writer and scholar, dies at 77
- Aug 29 Johann Oskar Backlund, Swedish-Russian astronomer (planets/asteroids), dies at 64
Assassination
Drug Overdose
Gunshot Wound
Murder
Plane Crash
Suicide