| 44671 | April 18 | Event | 2014 – Sixteen people are killed in an avalanche on Mount Everest. |
| 44672 | April 18 | Birth | 1480 – Lucrezia Borgia, Italian daughter of Pope Alexander VI (d. 1519) |
| 44673 | April 18 | Birth | 1503 – Henry II of Navarre, (d. 1555) |
| 44674 | April 18 | Birth | 1590 – Ahmed I, Ottoman sultan (d. 1617) |
| 44675 | April 18 | Birth | 1605 – Giacomo Carissimi, Italian priest and composer (d. 1674) |
| 44676 | April 18 | Birth | 1648 – Jeanne Guyon, French mystic and author (d. 1717) |
| 44677 | April 18 | Birth | 1666 – Jean-Féry Rebel, French violinist and composer (d. 1747) |
| 44678 | April 18 | Birth | 1740 – Sir Francis Baring, 1st Baronet, English banker and politician (d. 1810) |
| 44679 | April 18 | Birth | 1759 – Jacques Widerkehr, French cellist and composer (d. 1823) |
| 44680 | April 18 | Birth | 1771 – Karl Philipp, Prince of Schwarzenberg (d. 1820) |
| 44681 | April 18 | Birth | 1772 – David Ricardo, English economist and politician (d. 1823) |
| 44682 | April 18 | Birth | 1794 – William Debenham, English founder of Debenhams (d. 1863) |
| 44683 | April 18 | Birth | 1797 – Adolphe Thiers, French historian and politician, 2nd President of France (d. 1877) |
| 44684 | April 18 | Birth | 1813 – James McCune Smith, American physician and author (d. 1865) |
| 44685 | April 18 | Birth | 1819 – Carlos Manuel de Céspedes, Cuban lawyer and activist (d. 1874) |
| 44686 | April 18 | Birth | 1819 – Franz von Suppé, Austrian composer and conductor (d. 1895) |
| 44687 | April 18 | Birth | 1838 – Paul-Émile Lecoq de Boisbaudran, French chemist and academic (d. 1912) |
| 44688 | April 18 | Birth | 1857 – Clarence Darrow, American lawyer (d. 1938) |
| 44689 | April 18 | Birth | 1857 – Alexander Shirvanzade, Armenian playwright and author (d. 1935) |
| 44690 | April 18 | Birth | 1858 – Dhondo Keshav Karve, Indian educator and activist, Bharat Ratna Awardee (d. 1962) |
| 44691 | April 18 | Birth | 1863 – Count Leopold Berchtold, Austrian-Hungarian politician and diplomat, Joint Foreign Minister of Austria-Hungary (d. 1942) |
| 44692 | April 18 | Birth | 1863 – Linton Hope, English sailor and architect (d. 1920) |
| 44693 | April 18 | Birth | 1864 – Richard Harding Davis, American journalist and author (d. 1916) |
| 44694 | April 18 | Birth | 1874 – Abd-ru-shin, German author (d. 1941) |
| 44695 | April 18 | Birth | 1874 – Ivana Brlić-Mažuranić, Croatian author and poet (d. 1938) |
| 44696 | April 18 | Birth | 1877 – Vicente Sotto, Filipino lawyer and politician (d. 1950) |
| 44697 | April 18 | Birth | 1879 – Korneli Kekelidze, Georgian philologist and scholar (d. 1962) |
| 44698 | April 18 | Birth | 1880 – Sam Crawford, American baseball player, coach, and umpire (d. 1968) |
| 44699 | April 18 | Birth | 1882 – Isaac Babalola Akinyele, Nigerian ruler (d. 1964) |
| 44700 | April 18 | Birth | 1882 – Leopold Stokowski, English conductor (d. 1977) |