| 86341 | July 31 | Birth | 1894 – Fred Keenor, Welsh footballer (d. 1972) |
| 86342 | July 31 | Birth | 1901 – Jean Dubuffet, French painter and sculptor (d. 1985) |
| 86343 | July 31 | Birth | 1902 – Gubby Allen, Australian-English cricketer and soldier (d. 1989) |
| 86344 | July 31 | Birth | 1904 – Brett Halliday, American engineer, surveyor, and author (d. 1977) |
| 86345 | July 31 | Birth | 1907 – Roy Milton, American singer, drummer, and bandleader (d. 1983) |
| 86346 | July 31 | Birth | 1909 – Erik von Kuehnelt-Leddihn, Austrian theorist and author (d. 1999) |
| 86347 | July 31 | Birth | 1911 – George Liberace, American violinist (d. 1983) |
| 86348 | July 31 | Birth | 1912 – Bill Brown, Australian cricketer (d. 2008) |
| 86349 | July 31 | Birth | 1912 – Milton Friedman, American economist and academic, Nobel Prize laureate (d. 2006) |
| 86350 | July 31 | Birth | 1912 – Irv Kupcinet, American football player and journalist (d. 2003) |
| 86351 | July 31 | Birth | 1913 – Bryan Hextall, Canadian ice hockey player (d. 1984) |
| 86352 | July 31 | Birth | 1914 – Paul J. Christiansen, American conductor and composer (d. 1997) |
| 86353 | July 31 | Birth | 1914 – Louis de Funès, French actor and screenwriter (d. 1983) |
| 86354 | July 31 | Birth | 1916 – Sibte Hassan, Pakistani journalist, scholar, and activist (d. 1986) |
| 86355 | July 31 | Birth | 1916 – Billy Hitchcock, American baseball player, coach, and manager (d. 2006) |
| 86356 | July 31 | Birth | 1916 – Bill Todman, American screenwriter and producer (d. 1979) |
| 86357 | July 31 | Birth | 1917 – Jini Dellaccio, American photographer (d. 2014) |
| 86358 | July 31 | Birth | 1918 – Paul D. Boyer, American biochemist and academic, Nobel Prize laureate |
| 86359 | July 31 | Birth | 1918 – Hank Jones, American pianist, composer, and bandleader (d. 2010) |
| 86360 | July 31 | Birth | 1918 – Frank Renouf, New Zealand businessman and financier (d. 1998) |
| 86361 | July 31 | Birth | 1919 – Hemu Adhikari, Indian cricketer (d. 2003) |
| 86362 | July 31 | Birth | 1919 – Curt Gowdy, American sportscaster and actor (d. 2006) |
| 86363 | July 31 | Birth | 1919 – Primo Levi, Italian chemist and author (d. 1987) |
| 86364 | July 31 | Birth | 1920 – James E. Faust, American religious leader, lawyer, and politician (d. 2007) |
| 86365 | July 31 | Birth | 1920 – Percy Herbert, English actor (d. 1992) |
| 86366 | July 31 | Birth | 1921 – Peter Benenson, English lawyer and activist, founded Amnesty International (d. 2005) |
| 86367 | July 31 | Birth | 1921 – Donald Malarkey, American sergeant and author |
| 86368 | July 31 | Birth | 1921 – Whitney Young, American activist (d. 1971) |
| 86369 | July 31 | Birth | 1922 – Hank Bauer, American baseball player and manager (d. 2007) |
| 86370 | July 31 | Birth | 1923 – Ahmet Ertegun, Turkish-American songwriter and producer, founded Atlantic Records (d. 2006) |