| 9781 | January 23 | Birth | 1951 – David Patrick Kelly, American actor and composer |
| 9782 | January 23 | Birth | 1951 – Chesley Sullenberger, American captain and pilot |
| 9783 | January 23 | Birth | 1952 – Omar Henry, South African cricketer |
| 9784 | January 23 | Birth | 1953 – John Luther Adams, American composer |
| 9785 | January 23 | Birth | 1953 – Alister McGrath, Irish historian and theologian |
| 9786 | January 23 | Birth | 1953 – Antonio Villaraigosa, American politician, 41st Mayor of Los Angeles |
| 9787 | January 23 | Birth | 1953 – Robin Zander, American singer and guitarist |
| 9788 | January 23 | Birth | 1954 – Franco De Vita, Venezuelan singer-songwriter |
| 9789 | January 23 | Birth | 1954 – Richard Finch, American bass player, songwriter, and producer (KC and the Sunshine Band) |
| 9790 | January 23 | Birth | 1954 – Edward Ka-Spel, English singer-songwriter |
| 9791 | January 23 | Birth | 1957 – Caroline, Princess of Hanover |
| 9792 | January 23 | Birth | 1957 – Lou Schuler, American journalist and author |
| 9793 | January 23 | Birth | 1958 – Sergey Litvinov, Russian hammer thrower |
| 9794 | January 23 | Birth | 1959 – Clive Bull, English radio host |
| 9795 | January 23 | Birth | 1960 – Patrick de Gayardon, French sky diver (d. 1998) |
| 9796 | January 23 | Birth | 1960 – Leilani Kai, American wrestler and trainer |
| 9797 | January 23 | Birth | 1960 – Jean-François Sauvé, Canadian ice hockey player |
| 9798 | January 23 | Birth | 1961 – Mas Selamat bin Kastari, Indonesian-Singaporean criminal |
| 9799 | January 23 | Birth | 1961 – Yelena Sinchukova, Russian long jumper |
| 9800 | January 23 | Birth | 1962 – David Arnold, English composer |
| 9801 | January 23 | Birth | 1962 – Aivar Lillevere, Estonian footballer and coach |
| 9802 | January 23 | Birth | 1962 – Elvira Lindo, Spanish journalist and author |
| 9803 | January 23 | Birth | 1962 – Richard Roxburgh, Australian actor and producer |
| 9804 | January 23 | Birth | 1963 – Gail O'Grady, American actress |
| 9805 | January 23 | Birth | 1964 – Jonatha Brooke, American singer-songwriter and guitarist (The Story) |
| 9806 | January 23 | Birth | 1964 – Mariska Hargitay, American actress and producer |
| 9807 | January 23 | Birth | 1964 – Bharrat Jagdeo, Guyanese economist and politician, 7th President of Guyana |
| 9808 | January 23 | Birth | 1964 – Mario Roberge, Canadian ice hockey player |
| 9809 | January 23 | Birth | 1965 – Louie Clemente, American drummer |
| 9810 | January 23 | Birth | 1966 – Oleg Sakirkin, Kazakhstani triple jumper (d. 2015) |