| 43591 | April 15 | Birth | 1994 – Bea Nicolas, Filipino actress |
| 43592 | April 15 | Birth | 1995 – Cody Christian, American actor |
| 43593 | April 15 | Birth | 1996 – İpek Soylu, Turkish tennis player |
| 43594 | April 15 | Birth | 1997 – Maisie Williams, English actress and dancer |
| 43595 | April 15 | Death | 628 – Empress Suiko of Japan (b. 554) |
| 43596 | April 15 | Death | 1053 – Godwin, Earl of Wessex (b. 1001) |
| 43597 | April 15 | Death | 1220 – Adolf of Altena, German archbishop (b. 1157) |
| 43598 | April 15 | Death | 1415 – Manuel Chrysoloras, Greek philosopher and translator (b. 1355) |
| 43599 | April 15 | Death | 1446 – Filippo Brunelleschi, Italian sculptor and architect (b. 1377) |
| 43600 | April 15 | Death | 1558 – Roxelana, Ottoman wife of Suleiman the Magnificent (b. ca. 1502) |
| 43601 | April 15 | Death | 1610 – Robert Persons, English-Italian priest and author (b. 1546) |
| 43602 | April 15 | Death | 1632 – George Calvert, 1st Baron Baltimore, English politician, English Secretary of State (b. 1580) |
| 43603 | April 15 | Death | 1652 – Patriarch Joseph of Moscow, Russian patriarch |
| 43604 | April 15 | Death | 1659 – Simon Dach, German poet and hymnwriter (b. 1605) |
| 43605 | April 15 | Death | 1704 – Johannes Hudde, Dutch mathematician and politician (b. 1628) |
| 43606 | April 15 | Death | 1719 – Françoise d'Aubigné, Marquise de Maintenon, French wife of Louis XIV of France (b. 1635) |
| 43607 | April 15 | Death | 1754 – Jacopo Riccati, Italian mathematician and academic (b. 1676) |
| 43608 | April 15 | Death | 1761 – Archibald Campbell, 3rd Duke of Argyll, Scottish lawyer and politician, Lord President of the Court of Session (b. 1682) |
| 43609 | April 15 | Death | 1761 – William Oldys, English historian and author (b. 1696) |
| 43610 | April 15 | Death | 1764 – Madame de Pompadour, French mistress of Louis XV of France (b. 1721) |
| 43611 | April 15 | Death | 1764 – Peder Horrebow, Danish astronomer and mathematician (b. 1679) |
| 43612 | April 15 | Death | 1765 – Mikhail Lomonosov, Russian chemist and physicist (b. 1711) |
| 43613 | April 15 | Death | 1788 – Giuseppe Bonno, Austrian composer (b. 1711) |
| 43614 | April 15 | Death | 1793 – Ignacije Szentmartony, Croatian priest, mathematician, and astronomer (b. 1718) |
| 43615 | April 15 | Death | 1854 – Arthur Aikin, English chemist and mineralogist (b. 1773) |
| 43616 | April 15 | Death | 1861 – Sylvester Jordan, Austrian-German lawyer and politician (b. 1792) |
| 43617 | April 15 | Death | 1865 – Abraham Lincoln, American captain, lawyer, and politician, 16th President of the United States (b. 1809) |
| 43618 | April 15 | Death | 1888 – Matthew Arnold, English poet and critic (b. 1822) |
| 43619 | April 15 | Death | 1889 – Father Damien, Belgian priest and saint (b. 1840) |
| 43620 | April 15 | Death | 1898 – Te Keepa Te Rangihiwinui, New Zealand commander and politician |