| 5191 | January 12 | Birth | 1923 – Ira Hayes, American marine, who raised the U.S. flag on Iwo Jima (d. 1955) |
| 5192 | January 12 | Birth | 1924 – Olivier Gendebien, Belgian race car driver (d. 1998) |
| 5193 | January 12 | Birth | 1924 – Grethe Holmer, Danish actress (d. 2004) |
| 5194 | January 12 | Birth | 1924 – Chris Chase, American model, actress, and journalist (d. 2013) |
| 5195 | January 12 | Birth | 1925 – Bill Burrud, American television host, producer, and actor (d. 1990) |
| 5196 | January 12 | Birth | 1925 – Katherine MacGregor, American actress and dancer |
| 5197 | January 12 | Birth | 1925 – Bodil Udsen, Danish actress (d. 2008) |
| 5198 | January 12 | Birth | 1926 – Morton Feldman, American composer and academic (d. 1987) |
| 5199 | January 12 | Birth | 1926 – Andrew Laszlo, Hungarian-American cinematographer (d. 2011) |
| 5200 | January 12 | Birth | 1926 – Ray Price, American singer-songwriter and guitarist (d. 2013) |
| 5201 | January 12 | Birth | 1928 – Lloyd Ruby, American race car driver (d. 2009) |
| 5202 | January 12 | Birth | 1929 – Alasdair MacIntyre, Scottish-American philosopher and academic |
| 5203 | January 12 | Birth | 1929 – Jaakko Hintikka, Finnish philosopher and logician (d. 2015) |
| 5204 | January 12 | Birth | 1930 – Tim Horton, Canadian ice hockey player and businessman founded Tim Hortons (d. 1974) |
| 5205 | January 12 | Birth | 1930 – Jennifer Johnston, Irish author and playwright |
| 5206 | January 12 | Birth | 1930 – Glenn Yarbrough, American singer and actor |
| 5207 | January 12 | Birth | 1932 – Tzeni Karezi, Greek actress and screenwriter (d. 1992) |
| 5208 | January 12 | Birth | 1932 – Des O'Connor, English comedian, singer, and television host |
| 5209 | January 12 | Birth | 1933 – Michael Aspel, English television host |
| 5210 | January 12 | Birth | 1933 – Pavlos Matesis, Greek author and playwright (d. 2013) |
| 5211 | January 12 | Birth | 1934 – Metin Serezli, Turkish actor (d. 2013) |
| 5212 | January 12 | Birth | 1934 – Alan Sharp, Scottish-American author and screenwriter (d. 2013) |
| 5213 | January 12 | Birth | 1934 – Mick Sullivan, English rugby player and coach |
| 5214 | January 12 | Birth | 1935 – Tomiko Ishii, Japanese actress |
| 5215 | January 12 | Birth | 1935 – Kreskin, American magician and actor |
| 5216 | January 12 | Birth | 1936 – Jennifer Hilton, Baroness Hilton of Eggardon, English police officer and politician |
| 5217 | January 12 | Birth | 1936 – Raimonds Pauls, Latvian pianist and composer |
| 5218 | January 12 | Birth | 1936 – Brajanath Ratha, Indian poet and activist (d. 2014) |
| 5219 | January 12 | Birth | 1937 – Marie Dubois, French actress (d. 2014) |
| 5220 | January 12 | Birth | 1937 – Shirley Eaton, English actress |