| 144331 | December 23 | Birth | 1979 – Holly Madison, American model and actress |
| 144332 | December 23 | Birth | 1979 – Kenny Miller, Scottish footballer |
| 144333 | December 23 | Birth | 1979 – Yukifumi Murakami, Japanese javelin thrower |
| 144334 | December 23 | Birth | 1980 – Intira Jaroenpura, Thai actress |
| 144335 | December 23 | Birth | 1980 – Lexi Love, American porn actress |
| 144336 | December 23 | Birth | 1980 – Elvin Ng, Singaporean actor |
| 144337 | December 23 | Birth | 1980 – Cody Ross, American baseball player |
| 144338 | December 23 | Birth | 1980 – Kohei Yamamoto, Japanese actor |
| 144339 | December 23 | Birth | 1981 – Beth, Spanish singer and actress |
| 144340 | December 23 | Birth | 1981 – Maritza Correia, Puerto Rican-American swimmer |
| 144341 | December 23 | Birth | 1981 – Yuriorkis Gamboa, Cuban boxer |
| 144342 | December 23 | Birth | 1981 – Agnes Milowka, Polish-Australian diver, explorer, photographer, and author (d. 2011) |
| 144343 | December 23 | Birth | 1981 – Mario Santana, Argentinian footballer |
| 144344 | December 23 | Birth | 1982 – Brad Nelson, American baseball player |
| 144345 | December 23 | Birth | 1982 – Thomas Rohregger, Austrian cyclist |
| 144346 | December 23 | Birth | 1983 – Michael Chopra, English footballer |
| 144347 | December 23 | Birth | 1983 – Lisa Dobriskey, English runner |
| 144348 | December 23 | Birth | 1983 – Hanley Ramírez, Dominican baseball player |
| 144349 | December 23 | Birth | 1984 – Dudu Aharon, Israeli singer-songwriter |
| 144350 | December 23 | Birth | 1984 – Josh Satin, American baseball player |
| 144351 | December 23 | Birth | 1984 – Sebastian Werle, German rugby player |
| 144352 | December 23 | Birth | 1985 – Harry Judd, English drummer and songwriter (McFly and McBusted) |
| 144353 | December 23 | Birth | 1985 – Luke O'Loughlin, Australian actor and singer |
| 144354 | December 23 | Birth | 1986 – Beau Champion, Australian rugby player |
| 144355 | December 23 | Birth | 1986 – T. J. Oshie, American ice hockey player |
| 144356 | December 23 | Birth | 1986 – Noël Wells, American actress |
| 144357 | December 23 | Birth | 1987 – Tommaso Bellazzini, Italian footballer |
| 144358 | December 23 | Birth | 1987 – Thomas Bourgin, French motorcycle racer (d. 2013) |
| 144359 | December 23 | Birth | 1987 – Owen Franks, New Zealand rugby player |
| 144360 | December 23 | Birth | 1987 – Kana Kurashina, Japanese actress |