| 143251 | December 20 | Birth | 1975 – Jaydy Michel, Mexican model and actress |
| 143252 | December 20 | Birth | 1976 – Aubrey Huff, American baseball player and radio host |
| 143253 | December 20 | Birth | 1976 – Jang Hyuk, South Korean actor |
| 143254 | December 20 | Birth | 1976 – Adam Powell, Welsh game designer and businessman, co-founded Meteor Games |
| 143255 | December 20 | Birth | 1976 – Ramon Stoppelenburg, Dutch businessman and author |
| 143256 | December 20 | Birth | 1976 – Nenad Vučković, Croatian footballer |
| 143257 | December 20 | Birth | 1978 – Andrei Markov, Russian-Canadian ice hockey player |
| 143258 | December 20 | Birth | 1978 – Geremi Njitap, Cameroon footballer |
| 143259 | December 20 | Birth | 1978 – Bouabdellah Tahri, French runner |
| 143260 | December 20 | Birth | 1979 – David DeJesus, American baseball player |
| 143261 | December 20 | Birth | 1979 – George Lamb, English radio and television host |
| 143262 | December 20 | Birth | 1979 – Michael Rogers, Australian cyclist |
| 143263 | December 20 | Birth | 1979 – Ramón Rodríguez, Puerto Rican-American actor |
| 143264 | December 20 | Birth | 1979 – Benedikte Kruse, Norwegian singer and actor (Pitsj) |
| 143265 | December 20 | Birth | 1980 – Israel Castro, Mexican footballer |
| 143266 | December 20 | Birth | 1980 – Ashley Cole, English footballer |
| 143267 | December 20 | Birth | 1980 – Anthony da Silva, French-Portuguese footballer |
| 143268 | December 20 | Birth | 1980 – Martín Demichelis, Argentinian footballer |
| 143269 | December 20 | Birth | 1980 – Fitz Hall, English footballer |
| 143270 | December 20 | Birth | 1981 – Royal Ivey, American basketball player |
| 143271 | December 20 | Birth | 1981 – Darya Pchelnik, Belarusian hammer thrower |
| 143272 | December 20 | Birth | 1981 – James Shields, American baseball player |
| 143273 | December 20 | Birth | 1981 – Roy Williams, American football player |
| 143274 | December 20 | Birth | 1982 – Keny Arkana, French rapper |
| 143275 | December 20 | Birth | 1982 – Mohammad Asif, Pakistani cricketer |
| 143276 | December 20 | Birth | 1982 – David Cook, American singer-songwriter and guitarist (Axium and Midwest Kings) |
| 143277 | December 20 | Birth | 1982 – Kasper Klausen, Danish footballer |
| 143278 | December 20 | Birth | 1982 – David Wright, American baseball player |
| 143279 | December 20 | Birth | 1983 – Jonah Hill, American actor, producer, and screenwriter |
| 143280 | December 20 | Birth | 1983 – Chelsea Johnson, American pole vaulter |