| 18781 | February 17 | Death | 1339 – Otto, Duke of Austria (b. 1301) |
| 18782 | February 17 | Death | 1371 – Ivan Alexander of Bulgaria |
| 18783 | February 17 | Death | 1600 – Giordano Bruno, Italian mathematician, astronomer, and philosopher (b. 1548) |
| 18784 | February 17 | Death | 1609 – Ferdinando I de' Medici, Grand Duke of Tuscany (b. 1549) |
| 18785 | February 17 | Death | 1624 – Juan de Mariana, Spanish priest and historian (b. 1536) |
| 18786 | February 17 | Death | 1652 – Gregorio Allegri, Italian priest and composer (b. 1582) |
| 18787 | February 17 | Death | 1659 – Abel Servien, French politician, French Minister of Finance (b. 1593) |
| 18788 | February 17 | Death | 1673 – Molière, French playwright and actor (b. 1622) |
| 18789 | February 17 | Death | 1680 – Denzil Holles, 1st Baron Holles, English politician (b. 1599) |
| 18790 | February 17 | Death | 1680 – Jan Swammerdam, Dutch biologist, zoologist, and entomologist (b. 1637) |
| 18791 | February 17 | Death | 1715 – Antoine Galland, French orientalist and archaeologist (b. 1646) |
| 18792 | February 17 | Death | 1732 – Louis Marchand, French organist and composer (b. 1669) |
| 18793 | February 17 | Death | 1768 – Arthur Onslow, English lawyer and politician, Speaker of the British House of Commons (b. 1691) |
| 18794 | February 17 | Death | 1780 – Andreas Felix von Oefele, German historian and librarian (b. 1706) |
| 18795 | February 17 | Death | 1841 – Ferdinando Carulli, Italian guitarist and composer (b. 1770) |
| 18796 | February 17 | Death | 1854 – John Martin, English painter, engraver, and illustrator (b. 1789) |
| 18797 | February 17 | Death | 1856 – Heinrich Heine, German journalist and poet (b. 1797) |
| 18798 | February 17 | Death | 1863 – Ebenezer Thomas, Welsh poet (b.1802) |
| 18799 | February 17 | Death | 1874 – Adolphe Quetelet, Belgian astronomer, mathematician, and sociologist (b. 1796) |
| 18800 | February 17 | Death | 1883 – Vasudev Balwant Phadke, Indian activist (b. 1845) |
| 18801 | February 17 | Death | 1890 – Christopher Latham Sholes, American publisher and politician (b. 1819) |
| 18802 | February 17 | Death | 1905 – William Bickerton, English-American religious leader, leader in the Latter Day Saint movement (b. 1815) |
| 18803 | February 17 | Death | 1909 – Geronimo, American tribal leader (b. 1829) |
| 18804 | February 17 | Death | 1912 – Edgar Evans, Welsh sailor and explorer (b. 1876) |
| 18805 | February 17 | Death | 1919 – Wilfrid Laurier, Canadian lawyer and politician, 7th Prime Minister of Canada (b. 1841) |
| 18806 | February 17 | Death | 1934 – Albert I of Belgium (b. 1875) |
| 18807 | February 17 | Death | 1934 – Siegbert Tarrasch, German chess player (b. 1862) |
| 18808 | February 17 | Death | 1939 – Willy Hess, German violinist and educator (b. 1859) |
| 18809 | February 17 | Death | 1943 – Armand J. Piron, American violinist and composer (b. 1888) |
| 18810 | February 17 | Death | 1946 – Dorothy Gibson, American actress and singer (b. 1889) |