| 12361 | January 31 | Birth | 1914 – Carey Loftin, American actor and stuntman (d. 1997) |
| 12362 | January 31 | Birth | 1914 – Daya Mata, American religious leader (d. 2010) |
| 12363 | January 31 | Birth | 1914 – Jersey Joe Walcott, American boxer and police officer (d. 1994) |
| 12364 | January 31 | Birth | 1915 – Bobby Hackett, American trumpet player and cornet player (d. 1976) |
| 12365 | January 31 | Birth | 1915 – Alan Lomax, American historian, author, and scholar (d. 2002) |
| 12366 | January 31 | Birth | 1915 – Thomas Merton, American monk and author (d. 1968) |
| 12367 | January 31 | Birth | 1915 – Garry Moore, American comedian and game show host (d. 1993) |
| 12368 | January 31 | Birth | 1917 – Fred Bassetti, American architect, founded Bassetti Architects (d. 2013) |
| 12369 | January 31 | Birth | 1919 – Jackie Robinson, American baseball player and sportscaster (d. 1972) |
| 12370 | January 31 | Birth | 1920 – Stewart Udall, American soldier, lawyer, and politician, 37th United States Secretary of the Interior (d. 2010) |
| 12371 | January 31 | Birth | 1921 – John Agar, American actor (d. 2002) |
| 12372 | January 31 | Birth | 1921 – Carol Channing, American actress, singer, and dancer |
| 12373 | January 31 | Birth | 1921 – E. Fay Jones, American architect, designed the Thorncrown Chapel (d. 2004) |
| 12374 | January 31 | Birth | 1921 – Mario Lanza, American tenor and actor (d. 1959) |
| 12375 | January 31 | Birth | 1921 – Bill Pritchett, Australian public servant (d. 2014) |
| 12376 | January 31 | Birth | 1922 – Joanne Dru, American actress (d. 1996) |
| 12377 | January 31 | Birth | 1923 – Norman Mailer, American journalist and author (d. 2007) |
| 12378 | January 31 | Birth | 1925 – Benjamin Hooks, American minister, lawyer, and activist (d. 2010) |
| 12379 | January 31 | Birth | 1926 – Tom Alston, American baseball player (d. 1993) |
| 12380 | January 31 | Birth | 1927 – Norm Prescott, American animator, producer, and composer, co-founded Filmation Studios (d. 2005) |
| 12381 | January 31 | Birth | 1928 – Eric Ash, German-English engineer and academic |
| 12382 | January 31 | Birth | 1928 – Chuck Willis, American singer-songwriter (d. 1958) |
| 12383 | January 31 | Birth | 1928 – Irma Wyman, American computer scientist and engineer |
| 12384 | January 31 | Birth | 1929 – Rudolf Mössbauer, German physicist and academic, Nobel Prize laureate (d. 2011) |
| 12385 | January 31 | Birth | 1929 – Jean Simmons, British-American actress (d. 2010) |
| 12386 | January 31 | Birth | 1930 – Joakim Bonnier, Swedish race car driver (d. 1972) |
| 12387 | January 31 | Birth | 1930 – Lynn Carlin, American actress |
| 12388 | January 31 | Birth | 1931 – Ernie Banks, American baseball player and coach (d. 2015) |
| 12389 | January 31 | Birth | 1931 – Christopher Chataway, English runner, journalist, and politician (d. 2014) |
| 12390 | January 31 | Birth | 1932 – Miron Babiak, Polish captain (d. 2013) |