| 12421 | January 31 | Birth | 1947 – Nolan Ryan, American baseball player |
| 12422 | January 31 | Birth | 1947 – Matt Minglewood, Canadian singer-songwriter and guitarist |
| 12423 | January 31 | Birth | 1948 – Volkmar Groß, German footballer |
| 12424 | January 31 | Birth | 1948 – Muneo Suzuki, Japanese politician |
| 12425 | January 31 | Birth | 1949 – Johan Derksen, Dutch footballer and journalist |
| 12426 | January 31 | Birth | 1949 – Norris Church Mailer, American model and educator (d. 2010) |
| 12427 | January 31 | Birth | 1949 – Ken Wilber, American sociologist, philosopher, and author |
| 12428 | January 31 | Birth | 1950 – Denise Fleming, American author and illustrator |
| 12429 | January 31 | Birth | 1950 – Alexander Korzhakov, Russian general and bodyguard |
| 12430 | January 31 | Birth | 1950 – Janice Rebibo, American-Israeli author and poet (d. 2015) |
| 12431 | January 31 | Birth | 1951 – Dave Benton, Aruban-Estonian singer and drummer |
| 12432 | January 31 | Birth | 1951 – Harry Wayne Casey, American singer-songwriter, pianist, and producer |
| 12433 | January 31 | Birth | 1951 – Phil Manzanera, English guitarist, songwriter, and producer |
| 12434 | January 31 | Birth | 1951 – Won Sei-hoon, South Korean intelligence officer |
| 12435 | January 31 | Birth | 1952 – Nadya Rusheva, Russian painter (d. 1969) |
| 12436 | January 31 | Birth | 1953 – Ovidiu Lipan, Romanian drummer |
| 12437 | January 31 | Birth | 1954 – Mark Slavin, Israeli wrestler (d. 1972) |
| 12438 | January 31 | Birth | 1954 – Adrian Vandenberg, Dutch guitarist |
| 12439 | January 31 | Birth | 1955 – Virginia Ruzici, Romanian tennis player and manager |
| 12440 | January 31 | Birth | 1956 – John Lydon, English singer-songwriter |
| 12441 | January 31 | Birth | 1956 – Stefan Majewski, Polish footballer and coach |
| 12442 | January 31 | Birth | 1957 – Shirley Babashoff, American swimmer |
| 12443 | January 31 | Birth | 1958 – Armin Reichel, German footballer and manager |
| 12444 | January 31 | Birth | 1959 – Anthony LaPaglia, Australian footballer, actor, and producer |
| 12445 | January 31 | Birth | 1959 – Kelly Lynch, American model and actress |
| 12446 | January 31 | Birth | 1959 – Kelly Moore, American race car driver |
| 12447 | January 31 | Birth | 1959 – Mickey Simmonds, English keyboard player and songwriter |
| 12448 | January 31 | Birth | 1960 – George Benjamin, British composer of classical music |
| 12449 | January 31 | Birth | 1960 – Akbar Ganji, Iranian journalist and author |
| 12450 | January 31 | Birth | 1960 – Grant Morrison, Scottish author and screenwriter |