| 12451 | January 31 | Birth | 1960 – Željko Šturanović, Montenegrian politician 31st Prime Minister of Montenegro (d. 2014) |
| 12452 | January 31 | Birth | 1961 – Elizabeth Barker, Baroness Barker, English politician |
| 12453 | January 31 | Birth | 1961 – Fatou Bensouda, Gambian lawyer and judge |
| 12454 | January 31 | Birth | 1961 – Lloyd Cole, English singer-songwriter and guitarist (Lloyd Cole and the Commotions) |
| 12455 | January 31 | Birth | 1961 – Mako Ishino, Japanese singer and actress |
| 12456 | January 31 | Birth | 1961 – Fatih Kısaparmak, Turkish singer-songwriter |
| 12457 | January 31 | Birth | 1963 – John Dye, American actor (d. 2011) |
| 12458 | January 31 | Birth | 1963 – Madis Eek, Estonian architect |
| 12459 | January 31 | Birth | 1964 – Sylvie Bernier, Canadian diver |
| 12460 | January 31 | Birth | 1964 – Jeff Hanneman, American guitarist and songwriter (Slayer) (d. 2013) |
| 12461 | January 31 | Birth | 1964 – Martha MacCallum, American journalist |
| 12462 | January 31 | Birth | 1964 – Miki Maya, Japanese actress |
| 12463 | January 31 | Birth | 1964 – Dawn Prince-Hughes, American anthropologist and ethologist |
| 12464 | January 31 | Birth | 1964 – Billey Shamrock, Swedish singer-songwriter and actor |
| 12465 | January 31 | Birth | 1965 – Giorgos Gasparis, Greek basketball player and coach |
| 12466 | January 31 | Birth | 1965 – Ofra Harnoy, Canadian cellist. |
| 12467 | January 31 | Birth | 1966 – Umar Alisha, Indian journalist and philanthropist |
| 12468 | January 31 | Birth | 1966 – Dexter Fletcher, English actor and director |
| 12469 | January 31 | Birth | 1966 – Jorge González, Argentinian basketball player and wrestler (d. 2010) |
| 12470 | January 31 | Birth | 1966 – JJ Lehto, Finnish race car driver |
| 12471 | January 31 | Birth | 1967 – Chad Channing, American singer and drummer |
| 12472 | January 31 | Birth | 1967 – Fat Mike, American singer-songwriter, bass player, and producer |
| 12473 | January 31 | Birth | 1967 – Irene Wan, Hong Kong actress |
| 12474 | January 31 | Birth | 1967 – Michelle Ruff, American voice actress |
| 12475 | January 31 | Birth | 1967 – Joey Wong, Taiwanese-Hong Kong actress |
| 12476 | January 31 | Birth | 1968 – Matt King, English actor, producer, and screenwriter |
| 12477 | January 31 | Birth | 1968 – Ulrica Messing, Swedish politician 2nd Swedish Minister for Infrastructure |
| 12478 | January 31 | Birth | 1968 – Patrick Stevens, Belgian sprinter |
| 12479 | January 31 | Birth | 1970 – Minnie Driver, English singer-songwriter and actress |
| 12480 | January 31 | Birth | 1971 – Patrick Kielty, Northern Irish comedian and television host/presenter |