| 142531 | December 18 | Birth | 1971 – Barkha Dutt, Indian journalist |
| 142532 | December 18 | Birth | 1971 – Jason Hughes, Welsh actor |
| 142533 | December 18 | Birth | 1971 – Noriko Matsueda, Japanese pianist and composer |
| 142534 | December 18 | Birth | 1971 – Arantxa Sánchez Vicario, Spanish tennis player and sportscaster |
| 142535 | December 18 | Birth | 1972 – Anzhela Balakhonova, Ukrainian pole vaulter |
| 142536 | December 18 | Birth | 1972 – Rah Digga, American rapper and actress (The Conglomerate) |
| 142537 | December 18 | Birth | 1972 – Raymond Herrera, American drummer (Fear Factory, Arkaea, and Brujeria) |
| 142538 | December 18 | Birth | 1972 – DJ Lethal, Latvian-American DJ and producer (House of Pain, Limp Bizkit, and La Coka Nostra) |
| 142539 | December 18 | Birth | 1973 – Leila Arcieri, American actress and model |
| 142540 | December 18 | Birth | 1973 – Neil Busch, American singer-songwriter and bass player (...And You Will Know Us by the Trail of Dead) |
| 142541 | December 18 | Birth | 1973 – Fatuma Roba, Ethiopian runner |
| 142542 | December 18 | Birth | 1974 – Peter Boulware, American football player and politician |
| 142543 | December 18 | Birth | 1974 – Kari Byron, American sculptor and television host |
| 142544 | December 18 | Birth | 1974 – Bill Duggan, American actor |
| 142545 | December 18 | Birth | 1974 – Mutassim Gaddafi, Libyan colonel (d. 2011) |
| 142546 | December 18 | Birth | 1974 – Knut Schreiner, Norwegian singer, guitarist, and producer (Turbonegro, Euroboys, and Mirror Lakes) |
| 142547 | December 18 | Birth | 1975 – Sia, Australian singer-songwriter |
| 142548 | December 18 | Birth | 1975 – Jessica Feshbach, former official and spokesperson in the Church of Scientology |
| 142549 | December 18 | Birth | 1975 – Randy Houser, American singer-songwriter and guitarist |
| 142550 | December 18 | Birth | 1975 – David O'Doherty, Irish comedian, actor, and singer |
| 142551 | December 18 | Birth | 1975 – Trish Stratus, Canadian wrestler and actress |
| 142552 | December 18 | Birth | 1975 – Masaki Sumitani, Japanese wrestler and comedian |
| 142553 | December 18 | Birth | 1975 – Vincent van der Voort, Dutch darts player |
| 142554 | December 18 | Birth | 1976 – Koyuki, Japanese actress and model |
| 142555 | December 18 | Birth | 1977 – Axwell, Swedish DJ and producer (Swedish House Mafia) |
| 142556 | December 18 | Birth | 1977 – José Acevedo, Dominican baseball player |
| 142557 | December 18 | Birth | 1977 – Maria Brink, American singer-songwriter (In This Moment) |
| 142558 | December 18 | Birth | 1977 – Claudia Gesell, German runner |
| 142559 | December 18 | Birth | 1978 – Daniel Cleary, Canadian ice hockey player |
| 142560 | December 18 | Birth | 1978 – Ali Curtis, American soccer player |