| 9001 | January 21 | Birth | 1941 – Elaine Showalter, American author and critic |
| 9002 | January 21 | Birth | 1942 – Mac Davis, American singer-songwriter, guitarist, and actor |
| 9003 | January 21 | Birth | 1942 – Martin Sharp, Australian painter, cartoonist, songwriter and film-maker (d. 2013) |
| 9004 | January 21 | Birth | 1942 – Edwin Starr, American singer-songwriter (d. 2003) |
| 9005 | January 21 | Birth | 1943 – Rosemary Butler, English-Welsh politician |
| 9006 | January 21 | Birth | 1943 – Dimitris Poulikakos, Greek singer-songwriter and actor |
| 9007 | January 21 | Birth | 1945 – Martin Shaw, English actor and producer |
| 9008 | January 21 | Birth | 1947 – Jill Eikenberry, American actress |
| 9009 | January 21 | Birth | 1947 – Michel Jonasz, French singer-songwriter and actor |
| 9010 | January 21 | Birth | 1949 – Gennaro Contaldo, Italian chef and restaurateur |
| 9011 | January 21 | Birth | 1950 – Gary Locke, American politician and diplomat 36th United States Secretary of Commerce |
| 9012 | January 21 | Birth | 1950 – José Marín, Spanish race walker |
| 9013 | January 21 | Birth | 1950 – Billy Ocean, Trinidadian-English singer-songwriter |
| 9014 | January 21 | Birth | 1950 – Agnes van Ardenne, Dutch politician, Dutch Minister for Development Cooperation |
| 9015 | January 21 | Birth | 1951 – Eric Holder, American lawyer, judge, and politician, 82nd United States Attorney General |
| 9016 | January 21 | Birth | 1952 – Marco Camenisch, Swiss activist and murderer |
| 9017 | January 21 | Birth | 1953 – Paul Allen, American businessman and philanthropist co-founded Microsoft |
| 9018 | January 21 | Birth | 1954 – Idrissa Ouedraogo, Burkinabé director, producer, and screenwriter |
| 9019 | January 21 | Birth | 1954 – Phil Thompson, English footballer and coach |
| 9020 | January 21 | Birth | 1955 – Jeff Koons, American painter and sculptor |
| 9021 | January 21 | Birth | 1955 – Nikolina Shtereva, Bulgarian runner |
| 9022 | January 21 | Birth | 1956 – Robby Benson, American actor, singer, and director |
| 9023 | January 21 | Birth | 1956 – Geena Davis, American actress and producer |
| 9024 | January 21 | Birth | 1957 – Greg Ryan, German-American soccer player and coach |
| 9025 | January 21 | Birth | 1958 – Michael Wincott, Canadian actor |
| 9026 | January 21 | Birth | 1959 – Alex McLeish, Scottish footballer and manager |
| 9027 | January 21 | Birth | 1960 – Mamoru Nagano, Japanese animator and director |
| 9028 | January 21 | Birth | 1962 – Tyler Cowen, American economist and academic |
| 9029 | January 21 | Birth | 1962 – Marie Trintignant, French actress (d. 2003) |
| 9030 | January 21 | Birth | 1963 – Hakeem Olajuwon, Nigerian-American basketball player |