| 142411 | December 18 | Birth | 1896 – Gerald Barry, English Army officer and cricketer (d. 1977) |
| 142412 | December 18 | Birth | 1897 – Fletcher Henderson, American pianist and composer (d. 1952) |
| 142413 | December 18 | Birth | 1899 – Peter Wessel Zapffe, Norwegian philosopher and author (d. 1990) |
| 142414 | December 18 | Birth | 1904 – George Stevens, American director, producer, screenwriter, and cinematographer (d. 1975) |
| 142415 | December 18 | Birth | 1907 – Bill Holland, American race car driver (d. 1984) |
| 142416 | December 18 | Birth | 1907 – Lawrence Lucie, American guitarist (Mills Blue Rhythm Band) (d. 2009) |
| 142417 | December 18 | Birth | 1908 – Celia Johnson, English actress (d. 1982) |
| 142418 | December 18 | Birth | 1908 – Paul Siple, American geographer and explorer (d. 1969) |
| 142419 | December 18 | Birth | 1910 – Abe Burrows, American author, playwright, and director (d. 1985) |
| 142420 | December 18 | Birth | 1910 – Eric Tindill, New Zealand rugby player, cricketer, and umpire (d. 2010) |
| 142421 | December 18 | Birth | 1911 – Jules Dassin, American-Greek actor, director, producer, and screenwriter (d. 2008) |
| 142422 | December 18 | Birth | 1912 – Benjamin O. Davis, Jr., American pilot and general (d. 2002) |
| 142423 | December 18 | Birth | 1913 – Alfred Bester, American author and screenwriter (d. 1987) |
| 142424 | December 18 | Birth | 1913 – Willy Brandt, German politician, 4th Chancellor of Germany, Nobel Prize laureate (d. 1992) |
| 142425 | December 18 | Birth | 1913 – Ray Meyer, American basketball player and coach (d. 2006) |
| 142426 | December 18 | Birth | 1916 – Douglas Fraser, Scottish-American union leader and academic (d. 2008) |
| 142427 | December 18 | Birth | 1916 – Betty Grable, American actress, singer, and dancer (d. 1973) |
| 142428 | December 18 | Birth | 1917 – Ossie Davis, American actor and activist (d. 2005) |
| 142429 | December 18 | Birth | 1920 – Robert Leckie, American soldier and author (d. 2001) |
| 142430 | December 18 | Birth | 1922 – Jack Brooks, American colonel, lawyer, and politician (d. 2012) |
| 142431 | December 18 | Birth | 1922 – Tony Melody, English actor (b. 2008) |
| 142432 | December 18 | Birth | 1923 – Edwin Bramall, Baron Bramall, English field marshal and politician, Lord Lieutenant of Greater London |
| 142433 | December 18 | Birth | 1924 – Cicely Tyson, American actress |
| 142434 | December 18 | Birth | 1927 – Ramsey Clark, American lawyer and politician, 66th United States Attorney General |
| 142435 | December 18 | Birth | 1927 – Roméo LeBlanc, Canadian journalist and politician, 25th Governor General of Canada (d. 2009) |
| 142436 | December 18 | Birth | 1928 – Mirza Tahir Ahmad, Indian-English caliph and author (d. 2003) |
| 142437 | December 18 | Birth | 1929 – Gino Cimoli, American baseball player (d. 2011) |
| 142438 | December 18 | Birth | 1929 – Józef Glemp, Polish cardinal (d. 2013) |
| 142439 | December 18 | Birth | 1930 – Moose Skowron, American baseball player (d. 2012) |
| 142440 | December 18 | Birth | 1931 – Allen Klein, American talent agent and businessman (d. 2009) |