| 8721 | January 20 | Birth | 1964 – Fareed Zakaria, Indian-American journalist and author |
| 8722 | January 20 | Birth | 1965 – Colin Calderwood, Scottish footballer and manager |
| 8723 | January 20 | Birth | 1965 – Sophie, Countess of Wessex |
| 8724 | January 20 | Birth | 1965 – Greg K., American bass player (The Offspring) |
| 8725 | January 20 | Birth | 1965 – John Michael Montgomery, American singer-songwriter and guitarist |
| 8726 | January 20 | Birth | 1965 – Heather Small, English singer-songwriter and actress |
| 8727 | January 20 | Birth | 1965 – Anton Weissenbacher, Romanian footballer |
| 8728 | January 20 | Birth | 1966 – Stacey Dash, American actress |
| 8729 | January 20 | Birth | 1966 – Tracii Guns, American guitarist and songwriter |
| 8730 | January 20 | Birth | 1966 – Rainn Wilson, American actor, director, and producer |
| 8701 | January 20 | Birth | 1954 – Ken Page, American actor and singer |
| 8702 | January 20 | Birth | 1954 – Alison Seabeck, English politician |
| 8703 | January 20 | Birth | 1955 – McKeeva Bush, Caymanian politician, Premier of the Cayman Islands |
| 8704 | January 20 | Birth | 1955 – Hiromi Ōta, Japanese singer |
| 8705 | January 20 | Birth | 1956 – Maria Larsson, Swedish educator and politician, Swedish Minister of Health and Social Affairs |
| 8706 | January 20 | Birth | 1956 – Bill Maher, American comedian, actor, and television host |
| 8707 | January 20 | Birth | 1958 – Lorenzo Lamas, American actor, director, and producer |
| 8708 | January 20 | Birth | 1959 – Tami Hoag, American author |
| 8709 | January 20 | Birth | 1959 – R. A. Salvatore, American author |
| 8710 | January 20 | Birth | 1960 – Apa Sherpa, Nepalese-American mountaineer |
| 8711 | January 20 | Birth | 1960 – Scott Thunes, American bass player |
| 8712 | January 20 | Birth | 1960 – Will Wright, American video game designer co-founded Maxis |
| 8713 | January 20 | Birth | 1962 – Laima Muktupāvela, Latvian writer |
| 8714 | January 20 | Birth | 1963 – James Denton, American actor |
| 8715 | January 20 | Birth | 1963 – Mark Ryden, American painter |
| 8716 | January 20 | Birth | 1964 – Ozzie Guillén, Venezuelan-American baseball player and manager |
| 8717 | January 20 | Birth | 1964 – Ron Harper, American basketball player and coach |
| 8718 | January 20 | Birth | 1964 – Kaho Minami, Japanese actress |
| 8719 | January 20 | Birth | 1964 – Kazushige Nojima, Japanese screenwriter and songwriter |
| 8720 | January 20 | Birth | 1964 – Aquilino Pimentel III, Filipino lawyer and politician |