| 44821 | April 18 | Birth | 1963 – Mike Mangini, American drummer (Dream Theater, Annihilator, Extreme, and Tribe of Judah) |
| 44822 | April 18 | Birth | 1963 – Eric McCormack, Canadian-American actor and producer |
| 44823 | April 18 | Birth | 1963 – Conan O'Brien, American actor, producer, screenwriter, and talk show host |
| 44824 | April 18 | Birth | 1963 – Peter Van Loan, Canadian lawyer and politician, 16th Canadian Minister of International Trade |
| 44825 | April 18 | Birth | 1964 – Bez, English drummer and dancer (Happy Mondays and Black Grape) |
| 44826 | April 18 | Birth | 1964 – Jim Ellison, American singer-songwriter (Material Issue) (d. 1996) |
| 44827 | April 18 | Birth | 1964 – Niall Ferguson, Scottish historian and academic |
| 44828 | April 18 | Birth | 1964 – Rithy Panh, Cambodian director and screenwriter |
| 44829 | April 18 | Birth | 1965 – Steven Stayner, American kidnap victim (d. 1989) |
| 44830 | April 18 | Birth | 1965 – Rob Stenders, Dutch radio host |
| 44831 | April 18 | Birth | 1966 – Camille Coduri, English actress |
| 44832 | April 18 | Birth | 1966 – Trine Hattestad, Norwegian javelin thrower |
| 44833 | April 18 | Birth | 1966 – Valeri Kamensky, Russian ice hockey player |
| 44834 | April 18 | Birth | 1967 – Maria Bello, American actress and singer |
| 44835 | April 18 | Birth | 1968 – Mary Birdsong, American actress, singer, and screenwriter |
| 44836 | April 18 | Birth | 1968 – David Hewlett, English-Canadian actor, director, and screenwriter |
| 44837 | April 18 | Birth | 1969 – Keith DeCandido, American author |
| 44838 | April 18 | Birth | 1969 – Sayako Kuroda, Japanese daughter of Akihito |
| 44839 | April 18 | Birth | 1969 – Stefan Schwarz, Swedish footballer and manager |
| 44840 | April 18 | Birth | 1969 – Robert Změlík, Czech decathlete |
| 44841 | April 18 | Birth | 1970 – Rico Brogna, American baseball player and coach |
| 44842 | April 18 | Birth | 1970 – Greg Eklund, American drummer and guitarist (Everclear and The Oohlas) |
| 44843 | April 18 | Birth | 1970 – Saad Hariri, Saudi Arabian-Lebanese businessman and politician, 66th Prime Minister of Lebanon |
| 44844 | April 18 | Birth | 1970 – François Leroux, Canadian ice hockey player and radio host |
| 44845 | April 18 | Birth | 1970 – Lisa LoCicero, American actress |
| 44846 | April 18 | Birth | 1970 – Esther Schweins, German actress |
| 44847 | April 18 | Birth | 1970 – Tatiana Stefanidou, Greek journalist and talk show host |
| 44848 | April 18 | Birth | 1971 – Tamara Braun, American actress |
| 44849 | April 18 | Birth | 1971 – Samantha Cameron, English businesswoman, Spouse of the Prime Minister of the United Kingdom |
| 44850 | April 18 | Birth | 1971 – Oleg Petrov, Russian ice hockey player |