| 77971 | July 9 | Birth | 1879 – Carlos Chagas, Brazilian physician and parasitologist (d. 1934) |
| 77972 | July 9 | Birth | 1879 – Ottorino Respighi, Italian composer and conductor (d. 1936) |
| 77973 | July 9 | Birth | 1887 – James Ormsbee Chapin, American-Canadian painter and illustrator (d. 1975) |
| 77974 | July 9 | Birth | 1887 – Samuel Eliot Morison, American admiral and historian (d. 1976) |
| 77975 | July 9 | Birth | 1889 – Léo Dandurand, American-Canadian ice hockey player, coach, and referee (d. 1964) |
| 77976 | July 9 | Birth | 1893 – George Geary, English cricketer and coach (d. 1981) |
| 77977 | July 9 | Birth | 1896 – Maria Gomes Valentim, Brazilian super-centenarian (d. 2011) |
| 77978 | July 9 | Birth | 1901 – Barbara Cartland, English author and singer (d. 2000) |
| 77979 | July 9 | Birth | 1902 – Peter Acland, English soldier (d. 1993) |
| 77980 | July 9 | Birth | 1905 – Clarence Campbell, Canadian ice hockey player and referee (d. 1984) |
| 77981 | July 9 | Birth | 1907 – Eddie Dean, American singer-songwriter and actor (d. 1999) |
| 77982 | July 9 | Birth | 1908 – Allamah Rasheed Turabi, Pakistani philosopher and scholar (d. 1973) |
| 77983 | July 9 | Birth | 1908 – Minor White, American photographer, critic, and educator (d. 1976) |
| 77984 | July 9 | Birth | 1909 – Basil Wolverton, American author and illustrator (d. 1978) |
| 77985 | July 9 | Birth | 1911 – Mervyn Peake, English author and illustrator (d. 1968) |
| 77986 | July 9 | Birth | 1911 – John Archibald Wheeler, American physicist and author (d. 2008) |
| 77987 | July 9 | Birth | 1914 – Willi Stoph, German engineer and politician, 4th Prime Minister of East Germany (d. 1999) |
| 77988 | July 9 | Birth | 1915 – David Diamond, American composer and educator (d. 2005) |
| 77989 | July 9 | Birth | 1915 – Lee Embree, American sergeant and photographer (d. 2008) |
| 77990 | July 9 | Birth | 1916 – Dean Goffin, New Zealand composer (d. 1984) |
| 77991 | July 9 | Birth | 1916 – Edward Heath, English colonel and politician, Prime Minister of the United Kingdom (d. 2005) |
| 77992 | July 9 | Birth | 1918 – Nicolaas Govert de Bruijn, Dutch mathematician and academic (d. 2012) |
| 77993 | July 9 | Birth | 1918 – Jarl Wahlström, Finnish 12th General of The Salvation Army (d. 1999) |
| 77994 | July 9 | Birth | 1921 – David C. Jones, American general (d. 2013) |
| 77995 | July 9 | Birth | 1924 – Pierre Cochereau, French organist and composer (d. 1984) |
| 77996 | July 9 | Birth | 1924 – Leonard Pennario, American pianist and composer (d. 2008) |
| 77997 | July 9 | Birth | 1925 – Guru Dutt, Indian actor, director, and producer (d. 1964) |
| 77998 | July 9 | Birth | 1925 – Charles E. Wicks, American engineer, author, and academic (d. 2010) |
| 77999 | July 9 | Birth | 1926 – Murphy Anderson, American illustrator (d. 2015) |
| 78000 | July 9 | Birth | 1926 – Ben Roy Mottelson, American-Danish physicist and academic, Nobel Prize laureate |