| 143191 | December 20 | Birth | 1951 – Peter May, Scottish author and screenwriter |
| 143192 | December 20 | Birth | 1951 – Nuala O'Loan, Baroness O'Loan, Police Ombudsman for Northern Ireland (1999-2007) |
| 143193 | December 20 | Birth | 1951 – Marta Russell, American author and activist (d. 2013) |
| 143194 | December 20 | Birth | 1951 – Joey Silvera, American porn actor and director |
| 143195 | December 20 | Birth | 1952 – Jenny Agutter, English actress |
| 143196 | December 20 | Birth | 1952 – Sky Gilbert, Canadian drag queen performer, actor, and author |
| 143197 | December 20 | Birth | 1954 – Michael Badalucco, American actor and producer |
| 143198 | December 20 | Birth | 1954 – Sandra Cisneros, American author and poet |
| 143199 | December 20 | Birth | 1955 – David Breashears, American mountaineer, director, and producer |
| 143200 | December 20 | Birth | 1955 – Ed Kuepper, German-Australian singer-songwriter and guitarist (The Saints, Laughing Clowns, and The Apartments) |
| 143201 | December 20 | Birth | 1955 – Rory Markas, American sportscaster (d. 2010) |
| 143202 | December 20 | Birth | 1955 – Binali Yıldırım, Turkish politician |
| 143203 | December 20 | Birth | 1956 – Mohamed Ould Abdel Aziz, Mauritanian general and politician, President of Mauritania |
| 143204 | December 20 | Birth | 1956 – Guy Babylon, American keyboard player and songwriter (d. 2009) |
| 143205 | December 20 | Birth | 1956 – Blanche Baker, American actress and screenwriter |
| 143206 | December 20 | Birth | 1956 – Andrew Mackenzie, Scottish businessman |
| 143207 | December 20 | Birth | 1957 – Stephen Bicknell, English organ builder (d. 2007) |
| 143208 | December 20 | Birth | 1957 – Billy Bragg, English singer-songwriter and guitarist |
| 143209 | December 20 | Birth | 1957 – Anna Vissi, Cypriot singer-songwriter and actress (Epikouri) |
| 143210 | December 20 | Birth | 1957 – Anita Ward, American singer |
| 143211 | December 20 | Birth | 1957 – Mike Watt, American singer-songwriter and bass player (Banyan, Minutemen, Dos, The Stooges, and Firehose) |
| 143212 | December 20 | Birth | 1958 – Doug Nordquist, American high jumper |
| 143213 | December 20 | Birth | 1958 – James Thomson, American biologist and academic |
| 143214 | December 20 | Birth | 1959 – Simon Hughes, English cricketer and journalist |
| 143215 | December 20 | Birth | 1959 – Hildegard Körner, German runner |
| 143216 | December 20 | Birth | 1959 – Kazimierz Marcinkiewicz, Polish physicist and politician, 12th Prime Minister of Poland |
| 143217 | December 20 | Birth | 1959 – Trent Tucker, American basketball player and sportscaster |
| 143218 | December 20 | Birth | 1960 – Nalo Hopkinson, Jamaican-Canadian author |
| 143219 | December 20 | Birth | 1960 – Kim Ki-duk, South Korean director, producer, and screenwriter |
| 143220 | December 20 | Birth | 1961 – Mohammad Fouad, Egyptian singer-songwriter and actor |