| 143221 | December 20 | Birth | 1961 – Mike Keneally, American singer-songwriter and guitarist (Dethklok) |
| 143222 | December 20 | Birth | 1961 – Freddie Spencer, American motorcycle racer |
| 143223 | December 20 | Birth | 1963 – Infanta Elena, Duchess of Lugo |
| 143224 | December 20 | Birth | 1963 – Joel Gretsch, American actor |
| 143225 | December 20 | Birth | 1963 – Iqbal Theba, Pakistani-American actor |
| 143226 | December 20 | Birth | 1964 – Mark Coleman, American mixed martial artist and wrestler |
| 143227 | December 20 | Birth | 1965 – Robert Cavanah, Scottish actor and director |
| 143228 | December 20 | Birth | 1965 – Rich Gannon, American football player and sportscaster |
| 143229 | December 20 | Birth | 1966 – Matt Neal, English race car driver |
| 143230 | December 20 | Birth | 1966 – Veronica Pershina, Russian-American figure skater and coach |
| 143231 | December 20 | Birth | 1966 – Chris Robinson, American singer-songwriter and guitarist (The Black Crowes, Chris Robinson Brotherhood) |
| 143232 | December 20 | Birth | 1968 – Joe Cornish, English actor, director, and screenwriter |
| 143233 | December 20 | Birth | 1968 – Karl Wendlinger, Austrian race car driver |
| 143234 | December 20 | Birth | 1969 – Alain de Botton, Swiss-English philosopher and author |
| 143235 | December 20 | Birth | 1969 – Brian O'Halloran, American actor |
| 143236 | December 20 | Birth | 1969 – Zahra Ouaziz, Moroccan runner |
| 143237 | December 20 | Birth | 1969 – Bobby Phills, American basketball player (d. 2000) |
| 143238 | December 20 | Birth | 1970 – Nicole de Boer, Canadian actress |
| 143239 | December 20 | Birth | 1970 – Grant Flower, Zimbabwean cricketer and coach |
| 143240 | December 20 | Birth | 1970 – Alister McRae, Scottish race car driver |
| 143241 | December 20 | Birth | 1970 – Jörg Schmidt, German footballer |
| 143242 | December 20 | Birth | 1971 – Roger J. Beaujard, American guitarist, songwriter, and producer (Mortician and Malignancy) |
| 143243 | December 20 | Birth | 1972 – Anders Odden, Norwegian guitarist, songwriter, and producer (Cadaver, Magenta, Satyricon and Doctor Midnight & The Mercy Cult) |
| 143244 | December 20 | Birth | 1972 – Anja Rücker, German sprinter |
| 143245 | December 20 | Birth | 1973 – Maarja Kangro, Estonian author and poet |
| 143246 | December 20 | Birth | 1973 – David Nedohin, Canadian curler and sportscaster |
| 143247 | December 20 | Birth | 1973 – Cory Stillman, Canadian ice hockey player |
| 143248 | December 20 | Birth | 1974 – Die, Japanese guitarist, songwriter, and producer (Dir En Grey) |
| 143249 | December 20 | Birth | 1974 – Paul Linger, English footballer |
| 143250 | December 20 | Birth | 1975 – Bartosz Bosacki, Polish footballer |