- Jul 1 Charles D. Brown, American actor (Barefoot Boy, Disbarred, Night Editor), born in Council Bluffs, Iowa (d. 1948)
- Jul 2 Marcel Tabuteau, French-American oboist (Philadelphia Orch 1915-54), born in Compiègne, Oise, France (d. 1966)
- Jul 6 Annette Kellermann, Australian swimmer, silent-film actress (A Daughter of the Gods; Venus Of The South Seas), and author, born in Marrickville, New South Wales, New South Wales
- Jul 6 Marc Chagall [Moise Shagal], Jewish Belarusan-French modernist painter and stained glass artist (La Mariée; I and the Village), born in Liozna, Russian Empire (now Belarus) (d. 1985)
- Jul 7 Dirk Koster, literary (New Noises)
- Jul 7 Raymond Hatton, American actor (Girls in Prison, Lady Killer), born in Red Oak, Iowa (d. 1971)
- Jul 9 Samuel Eliot Morison, American historian (Admiral of the Ocean Sea), born in Boston, Massachusetts (d. 1976)
- Jul 10 Alfred Ernest Whitehead, English-Canadian composer, born in Peterborough, Cambridgeshire, England (d. 1974)
- Jul 15 Wharton Esherick, American artist and sculptor who worked primarily in wood, born in Philadelphia, Pennsylvania (d. 1970)
- Jul 16 "Shoeless" Joe Jackson, American baseball outfielder, 1908-20 (Chicago White Sox, and two other teams; 1919 World Series "Black Sox" Scandal), born in Pickens County, South Carolina (d. 1951)
Vidkun Quisling
Jul 18 Vidkun Quisling, Norwegian Minister of Defense and Prime Minister (1942-45), born in Fyresdal, Norway (d. 1945)
Marcel Duchamp
Jul 28 Marcel Duchamp, French sculptor and painter (Nude Descending a Staircase), born in Blainville-Crevon, France (d. 1968)
- Jul 29 Rudi Stephan, German composer (Die ersten Menschen), born in Worms, Hesse (d. 1915)
- Jul 29 Sigmund Romberg, Nagykanizsa Hungary, operetta composer (Blossom Time)
- Jul 29 Tim Mara, American founder and administrator (NFL NY Giants), born in New York (d. 1959)
- Jul 29 Komako Kimura, Japanese suffragette, actress and editor (d. 1980)
- Jul 30 Felix Andries Vening Meinesz, Dutch geophysicist (gravity), born in The Hague, Netherlands (d. 1966)
- Jul 31 Hans Freyer, German sociologist and philosopher, born in Leipzig, Germany (d. 1969)