- Jul 4 Henry "Doc" Carlson, American Basketball Hall of Fame collegiate coach (University of Pittsburgh, 1922-53: 367–248 [.597]), originated figure 8 play, born in Murray City, Ohio (d. 1964)
- Jul 8 Clemens VI Trefois, Flemish architect and sociologist
- Jul 9 Pyotr Kapitsa, Russian physicist (Nobel Prize 1978), born in Kronshtadt, Russian Empire (d. 1984)
- Jul 10 Jimmy McHugh, American composer ("I Can't Give You Anything But Love"; "On the Sunny Side of the Street"; "I'm In The Mood For Love"), born in Boston, Massachusetts (d. 1969)
- Jul 11 Walter Wanger [Feuchtwanger], US producer (Stagecoach)
- Jul 13 Isaak Babel, Russian writer (Konarmija, Marija) [OS Jun 30]
- Jul 15 Tadeusz Sendzimir, Polish-American engineer and inventor (d. 1989)
- Jul 17 Georges Lemaître, Belgian Catholic Priest, astronomer and physics professor, who initially proposed the universe expansion and big-bang theories, born in Charleroi, Belgium (d. 1966)
- Jul 18 Bernard Wagenaar, Dutch-American composer (3 Songs for Chinese), born in Arnherm, Netherlands (d. 1971)
- Jul 19 Aleksandr Yakovlevich Khinchin, Russian mathematician, born in Kondrovo, Kaluga Governorate, Russian Empire (d. 1959)
- Jul 19 Joris van Severen, Flemish politician and founder of the Alliance of Dietsche National Solidarists, born in Wakken, Belgium (d. 1940)
- Jul 19 Khawaja Nazimuddin, 2nd Prime Minister of Pakistan and President of Pakistan Muslim League, born in Dacca, Bengal, British India (d. 1964)
- Jul 22 Oskar Maria Graf, German writer, born in Berg, Bavaria (d. 1967)
- Jul 23 Arthur Treacher, British character actor (The Little Princess; Thank You, Jeeves), TV announcer/sidekick (The Merv Griffin Show, 1965-70), and fish and chips restaurant namesake, born in Brighton, England (d. 1975)
- Jul 24 Walter Schulthess, Swiss composer, born in Zürich, Switzerland (d. 1971)
Gavrilo Princip (1894-1918)
Jul 25 Bosnian-Serb assassin of Archduke Franz Ferdinand, born in Obljaj, Bosnia
- Jul 25 Walter Brennan, American actor (Real McCoys, At Gun Point), born in Lynn, Massachusetts (d. 1974)
Aldous Huxley (1894-1963)
Jul 26 English author (Brave New World, Island), born in Godalming, Surrey
- Jul 26 Lodewijk Rogier, Dutch historian (Henric van Veldeken), born in Rotterdam, Netherlands (d. 1974)
- Jul 27 Gerald F. Bogan, U.S. Navy aviator and vice admiral who served in World War I & II, born in Mackinac Island, Michigan (d. 1973)
- Jul 30 Blanche Knopf, American publisher, president of Alfred A. Knopf, Inc. and wife of publisher Alfred A. Knopf Sr., born in NYC, New York (d. 1966)
- Jul 30 Carl Snavely, American College Football Hall of Fame coach (Bucknell, North Carolina, Cornell 180–96–16), born in Omaha, Nebraska (d. 1975)
- Jul 31 Fred Keenor, Welsh footballer, born in Cardiff, Wales (d. 1972)
- Jul 31 Roy Bargy, American pianist and composer (Jimmy Durante Show), born in Newaygo, Michigan (d. 1974)