| 9751 | January 23 | Birth | 1933 – Chita Rivera, American actress, singer, and dancer |
| 9752 | January 23 | Birth | 1934 – Pierre Bourgault, Canadian journalist and politician (d. 2003) |
| 9753 | January 23 | Birth | 1935 – Mike Agostini, Trinidadian sprinter |
| 9754 | January 23 | Birth | 1935 – Robert Parris Moses, American educator and activist |
| 9755 | January 23 | Birth | 1935 – Tom Reamy, American author (d. 1977) |
| 9756 | January 23 | Birth | 1935 – Teresa Żylis-Gara, Lithuanian-Polish soprano |
| 9757 | January 23 | Birth | 1936 – Brian Howe, Australian minister and politician 8th Deputy Prime Minister of Australia |
| 9758 | January 23 | Birth | 1936 – Jerry Kramer, American football player and sportscaster |
| 9759 | January 23 | Birth | 1936 – Cécile Ousset, French pianist |
| 9760 | January 23 | Birth | 1938 – Giant Baba, Japanese wrestler and promoter, founded All Japan Pro Wrestling (d. 1999) |
| 9761 | January 23 | Birth | 1938 – Georg Baselitz, German painter and sculptor |
| 9762 | January 23 | Birth | 1939 – Sonny Chiba, Japanese actor and martial artist |
| 9763 | January 23 | Birth | 1940 – Alan Cheuse, American writer and critic (d. 2015) |
| 9764 | January 23 | Birth | 1941 – João Ubaldo Ribeiro, Brazilian journalist, author, and academic (d. 2014) |
| 9765 | January 23 | Birth | 1942 – Abdur Razzak, Indian-Bangladeshi actor and producer |
| 9766 | January 23 | Birth | 1942 – Herman Tjeenk Willink, Dutch judge and politician |
| 9767 | January 23 | Birth | 1943 – Gary Burton, American vibraphone player and composer |
| 9768 | January 23 | Birth | 1943 – Özhan Canaydın, Turkish basketball player and businessman (d. 2010) |
| 9769 | January 23 | Birth | 1943 – Gil Gerard, American actor and producer |
| 9770 | January 23 | Birth | 1944 – Rutger Hauer, Dutch actor, director, and producer |
| 9771 | January 23 | Birth | 1945 – Mike Harris, Canadian politician, 22nd Premier of Ontario |
| 9772 | January 23 | Birth | 1946 – Arnoldo Alemán, Nicaraguan lawyer and politician, President of Nicaragua |
| 9773 | January 23 | Birth | 1946 – Boris Berezovsky, Russian-English businessman and mathematician (d. 2013) |
| 9774 | January 23 | Birth | 1946 – Zvonko Bušić, Croatian terrorist, hijacker of TWA Flight 355 (d. 2013) |
| 9775 | January 23 | Birth | 1947 – Tom Carper, American captain and politician, 71st Governor of Delaware |
| 9776 | January 23 | Birth | 1947 – Megawati Sukarnoputri, Indonesian politician, 5th President of Indonesia |
| 9777 | January 23 | Birth | 1948 – David F. Ford, Irish theologian and academic |
| 9778 | January 23 | Birth | 1950 – Richard Dean Anderson, American actor, producer, and composer |
| 9779 | January 23 | Birth | 1950 – Danny Federici, American accordion player (E Street Band) (d. 2008) |
| 9780 | January 23 | Birth | 1951 – Margaret Bailes, American sprinter |