- Aug 1 Frank Little, American labor organizer (lynched) (b. 1879)
- Aug 3 Ferdinand Georg Frobenius, German mathematician (Frobenius–Stickelberger formulae), dies at 67
- Aug 7 Squadron Commander E.H. Dunning, first pilot to land his aircraft on a moving ship. (b. 1891)
- Aug 15 Thomas J. Higgins, Union Army soldier during the American Civil War, recipient of America's highest military decoration (Medal of Honor), dies at 86
- Aug 20 JFW Adolf Ritter von Baeyer, German chemist (Nobel 1905), dies
- Aug 22 Matthijs Maris [Thijs], Dutch painter and etcher influenced by Pre-Raphaelites, dies at 78
- Aug 30 Moisei Uritsky, Russian Bolshevik revolutionary (leader of Petrogradse Cheka), assassinated at 45
Assassination
Drug Overdose
Gunshot Wound
Murder
Plane Crash
Suicide