| 81631 | July 18 | Death | 1610 – Caravaggio, Italian painter (b. 1573) |
| 81632 | July 18 | Death | 1639 – Bernard of Saxe-Weimar, German general (b. 1604) |
| 81633 | July 18 | Death | 1695 – Johannes Camphuys, Dutch politician, Governor-General of the Dutch East Indies (b. 1634) |
| 81634 | July 18 | Death | 1698 – Johann Heinrich Heidegger, Swiss theologian and author (b. 1633) |
| 81635 | July 18 | Death | 1721 – Jean-Antoine Watteau, French painter (b. 1684) |
| 81636 | July 18 | Death | 1730 – François de Neufville, duc de Villeroy, French general (b. 1644) |
| 81637 | July 18 | Death | 1756 – Pieter Langendijk, Dutch poet and playwright (b. 1683) |
| 81638 | July 18 | Death | 1792 – John Paul Jones, Scottish-American admiral and diplomat (b. 1747) |
| 81639 | July 18 | Death | 1817 – Jane Austen, English author and poet (b. 1775) |
| 81640 | July 18 | Death | 1863 – Robert Gould Shaw, American colonel (b. 1837) |
| 81641 | July 18 | Death | 1872 – Benito Juárez, Mexican lawyer and politician, 26th President of Mexico (b. 1806) |
| 81642 | July 18 | Death | 1884 – Ferdinand von Hochstetter, Austrian geologist and academic (b. 1829) |
| 81643 | July 18 | Death | 1890 – Lydia Becker, English journalist, author, and activist, co-founded the Women's Suffrage Journal (b. 1827) |
| 81644 | July 18 | Death | 1892 – Thomas Cook, English travel agent, founded the Thomas Cook Group (b. 1808) |
| 81645 | July 18 | Death | 1899 – Horatio Alger, Jr., American journalist and author (b. 1832) |
| 81646 | July 18 | Death | 1916 – Benjamin C. Truman, American journalist and author (b. 1835) |
| 81647 | July 18 | Death | 1918 – Princess Elisabeth of Hesse and by Rhine (b. 1864) |
| 81648 | July 18 | Death | 1925 – Louis-Nazaire Bégin, Canadian cardinal (b. 1840) |
| 81649 | July 18 | Death | 1932 – Jean Jules Jusserand, French author and diplomat, French Ambassador to the United States (b. 1855) |
| 81650 | July 18 | Death | 1937 – Julian Bell, English poet and academic (b. 1908) |
| 81651 | July 18 | Death | 1938 – Marie of Romania (b. 1875) |
| 81652 | July 18 | Death | 1944 – Thomas Sturge Moore, English author, poet, and playwright (b. 1870) |
| 81653 | July 18 | Death | 1947 – Evald Tipner, Estonian footballer and ice hockey player (b. 1906) |
| 81654 | July 18 | Death | 1948 – Herman Gummerus, Finnish historian, academic, and politician (b. 1877) |
| 81655 | July 18 | Death | 1949 – Vítězslav Novák, Czech composer and educator (b. 1870) |
| 81656 | July 18 | Death | 1950 – Carl Clinton Van Doren, American author and critic (b. 1885) |
| 81657 | July 18 | Death | 1952 – Jack Earle, American actor (b. 1906) |
| 81658 | July 18 | Death | 1952 – Paul Saintenoy, Belgian architect and historian (b. 1862) |
| 81659 | July 18 | Death | 1953 – Lucy Booth, English-Swedish daughter of William and Catherine Booth (b. 1868) |
| 81660 | July 18 | Death | 1953 – Sigfred Johansen, Danish actor (b. 1908) |