| 82579 | July 21 | Birth | 1943 – Fritz Glatz, Austrian race car driver (d. 2002) |
| 82580 | July 21 | Birth | 1943 – Edward Herrmann, American actor and singer (d. 2014) |
| 82581 | July 21 | Birth | 1944 – John Atta Mills, Ghanaian lawyer and politician, 3rd President of Ghana (d. 2012) |
| 82582 | July 21 | Birth | 1944 – Buchi Emecheta, Nigerian author and academic |
| 82583 | July 21 | Birth | 1944 – Paul Wellstone, American academic and politician (d. 2002) |
| 82584 | July 21 | Birth | 1945 – Wendy Cope, English poet, critic, and educator |
| 82585 | July 21 | Birth | 1945 – Geoff Dymock, Australian cricketer |
| 82586 | July 21 | Birth | 1945 – John Lowe, English darts player |
| 82587 | July 21 | Birth | 1945 – Barry Richards, South African cricketer |
| 82588 | July 21 | Birth | 1946 – Ken Starr, American lawyer and judge, 39th Solicitor General of the United States |
| 82589 | July 21 | Birth | 1946 – Timothy Harris, American author, screenwriter and producer |
| 82590 | July 21 | Birth | 1947 – Chetan Chauhan, Indian cricketer and politician |
| 82561 | July 21 | Birth | 1928 – Sky Low Low, Canadian wrestler (d. 1998) |
| 82562 | July 21 | Birth | 1929 – Bob Orton, American wrestler (d. 2006) |
| 82563 | July 21 | Birth | 1930 – Anand Bakshi, Indian poet and songwriter (d. 2002) |
| 82564 | July 21 | Birth | 1930 – Helen Merrill, American singer |
| 82565 | July 21 | Birth | 1931 – Plas Johnson, American saxophonist (B. Bumble and the Stingers and The Wrecking Crew) |
| 82566 | July 21 | Birth | 1931 – Leon Schidlowsky, Chilean-Israeli painter and composer |
| 82567 | July 21 | Birth | 1933 – John Gardner, novelist, essayist, and critic (d. 1982) |
| 82568 | July 21 | Birth | 1934 – Chandu Borde, Indian cricketer and manager |
| 82569 | July 21 | Birth | 1934 – Jonathan Miller, English actor, director, and author |
| 82570 | July 21 | Birth | 1935 – Norbert Blüm, German businessman and politician |
| 82571 | July 21 | Birth | 1935 – Moe Drabowsky, Polish-American baseball player and coach (d. 2006) |
| 82572 | July 21 | Birth | 1935 – Kaye Stevens, American singer and actress (d. 2011) |
| 82573 | July 21 | Birth | 1938 – Les Aspin, American captain and politician, 18th United States Secretary of Defense (d. 1995) |
| 82574 | July 21 | Birth | 1938 – Anton Kuerti, Austrian-Canadian pianist, composer, and conductor |
| 82575 | July 21 | Birth | 1938 – Janet Reno, American lawyer and politician, 79th United States Attorney General |
| 82576 | July 21 | Birth | 1939 – Jamey Aebersold, American saxophonist and educator |
| 82577 | July 21 | Birth | 1939 – Kim Fowley, American singer-songwriter, producer, and manager (d. 2015) |
| 82578 | July 21 | Birth | 1939 – John Negroponte, English-American diplomat, 23rd United States Ambassador to the United Nations |