- Jul 1 Charles D Brown, American actor (Barefoot Boy, Disbarred, Night Editor), born in Council Bluffs, Iowa (d. 1948)
- Jul 2 Marcel Tabuteau, Compiègne France, oboist (Philadelphia Orch 1915-54)
- Jul 6 Marc Chagall, Russian-French artist (I & The Village), born in Vitebsk, Russian Empire (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, historian (Admiral of the Ocean Sea)
- Jul 10 Alfred Ernest Whitehead, composer
- Jul 16 "Shoeless" Joe Jackson, American professional baseball player (Black Sox Scandal), born in Pickens County, South Carolina (d. 1951)
- Jul 18 Vidkun Al Quisling, Norwegian minister of Defense/premier (1942-45)
- Jul 20 Willem H Drucker, Dutch lawyer
- Jul 22 Gustav Hertz, German quantum physicist (Nobel 1925)
Marcel Duchamp
Jul 28 Marcel Duchamp, French sculptor and painter (Nude Descending a Staircase), born in Blainville-Crevon, France (d. 1968)
Marcel Duchamp
- Jul 29 Rudi Stephan, composer
- Jul 29 Sigmund Romberg, Nagykanizsa Hungary, operetta composer (Blossom Time)
- Jul 30 Felix A Vening Meinesz, Dutch geophysicist (gravity)
- Jul 30 Timothy Mara, NFL owner (NY Giants)
- Jul 31 Hans Freyer, German sociologist and philosopher, born in Leipzig, Germany (d. 1969)