- Aug 1 John Friend Mahoney, American physician who pioneered the treatment of syphilis with penicillin, born in Fond du Lac, Wisconsin (d. 1957)
- Aug 1 Walther Gerlach, German physicist who, with Otto Stern, co-discovered spin quantization in a magnetic field (Stern–Gerlach effect), born in Biebrich, Rhineland Palatinate, Germany (d. 1979)
- Aug 5 Conrad Aiken, American Pulitzer poet and writer (Ushant/Conversation), born in Savannah, Georgia (d. 1973)
- Aug 6 George Kenney, American Air Force General (Commander of South West Pacific Area, 1942-45), born in Yarmouth, Nova Scotia, Canada (d. 1977)
- Aug 6 John Middleton Murry, English poet and literary critic (Between Two Worlds), born in London, England (d. 1957)
- Aug 8 Jack Ryder, Australian cricket all-rounder (20 Tests, 1,394 runs @ 51.62), born in Collingwood, Victoria (d. 1977)
- Aug 10 (Cecil) Armstrong Gibbs, British composer, born in Great Baddow, Essex, England (d. 1960)
- Aug 10 Charles Darrow, American businessman who modified and popularized Monopoly game, born in Philadelphia, Pennsylvania (d. 1967)
- Aug 10 Irene Steer, Welsh swimmer (Olympic gold GB 4 x 100m relay 1912), born in Cardiff, Wales (d. 1977)
- Aug 12 Zerna Sharp, American writer and educator (Dick and Jane) (d. 1981)
- Aug 13 Camillien Houde, French Canadian politician and Mayor of Montreal, born in Montreal, Quebec (d. 1958)
- Aug 19 Arthur Waley, English sinologist, translator from Chinese & Japanese, born in Tunbridge Wells, England (d. 1966)
- Aug 20 Witold Friemann, Polish composer, pianist, conductor and pedagogue, born in Konin, Poland (d. 1977)
- Aug 23 Alfred Lichtenstein, German writer, born in Berlin, Germany (d. 1914)
- Aug 24 Simon Kimbangu/Kibangu, Congolese religious leader and founder of Kimbanguism, born in Nkamba, Congo (d. 1951)
- Aug 30 Eduardo Ciannelli, Italian actor (Foreign Correspondent, Gunga Din), born in Ischia, Italy (d. 1969)
- Aug 31 Bombardier Billy Wells [William Thomas Wells], English heavyweight boxer (Lonsdale Belt, 1911), born in London, England (d. 1967)