| 3871 | January 9 | Birth | 1952 – Kaushik Basu, Indian economist and academic |
| 3872 | January 9 | Birth | 1952 – Hugh Bayley, English politician |
| 3873 | January 9 | Birth | 1952 – Mike Capuano, American politician |
| 3874 | January 9 | Birth | 1953 – Javad Alizadeh, Iranian cartoonist and painter |
| 3875 | January 9 | Birth | 1953 – Morris Gleitzman, English-Australian author |
| 3876 | January 9 | Birth | 1953 – Shigeru So, Japanese runner |
| 3877 | January 9 | Birth | 1953 – Takeshi So, Japanese runner |
| 3878 | January 9 | Birth | 1954 – Philippa Gregory, Kenyan-English author and academic |
| 3879 | January 9 | Birth | 1955 – Michiko Kakutani, American journalist and critic |
| 3880 | January 9 | Birth | 1955 – J. K. Simmons, American actor |
| 3881 | January 9 | Birth | 1956 – Kimberly Beck, American actress |
| 3882 | January 9 | Birth | 1956 – Lucyna Langer, Polish hurdler |
| 3883 | January 9 | Birth | 1956 – Waltraud Meier, German soprano and mezzo-soprano |
| 3884 | January 9 | Birth | 1956 – Imelda Staunton, English actress |
| 3885 | January 9 | Birth | 1956 – Mike Walczewski, American announcer |
| 3886 | January 9 | Birth | 1957 – Bibie, Ghanaian-French singer |
| 3887 | January 9 | Birth | 1957 – Phil Lewis, American singer-songwriter |
| 3888 | January 9 | Birth | 1958 – Mehmet Ali Ağca, Turkish murderer |
| 3889 | January 9 | Birth | 1958 – Stephen Neale, English philosopher and academic |
| 3890 | January 9 | Birth | 1959 – Mark Martin, American race car driver |
| 3891 | January 9 | Birth | 1959 – Rigoberta Menchú, Guatemalan activist and politician Nobel Prize laureate |
| 3892 | January 9 | Birth | 1959 – Otis Nixon, American baseball player |
| 3893 | January 9 | Birth | 1961 – Oliver Goldstick, American screenwriter and producer |
| 3894 | January 9 | Birth | 1961 – Al Jean, American screenwriter and producer |
| 3895 | January 9 | Birth | 1961 – Sandra Myers, American-Spanish sprinter |
| 3896 | January 9 | Birth | 1961 – Henry Omaga-Diaz, Filipino journalist |
| 3897 | January 9 | Birth | 1963 – Michael Everson, American-Irish linguist and type designer |
| 3898 | January 9 | Birth | 1963 – Irwin McLean, Irish biologist and academic |
| 3899 | January 9 | Birth | 1964 – Stan Javier, Dominican baseball player and manager |
| 3900 | January 9 | Birth | 1965 – Haddaway, Trinidadian-German singer |