| 51511 | May.04 | Birth | 1992 – Ashley Rickards, American actress |
| 51512 | May.04 | Birth | 1992 – Grace Phipps, American actress and singer |
| 51513 | May.04 | Birth | 1993 – Jānis Bērziņš, Latvian basketball player |
| 51514 | May.04 | Birth | 1994 – Pauline Ducruet, Monegasque daughter of Princess Stéphanie of Monaco |
| 51515 | May.04 | Birth | 1994 – Alexander Gould, American actor |
| 51516 | May.04 | Birth | 1996 – Tanja Tuomi, Finnish tennis player |
| 51517 | May.04 | Birth | 2002 – Anastasiya Petryk, Ukrainian singer |
| 51518 | May.04 | Birth | 2009 – Prince Henrik of Denmark |
| 51519 | May.04 | Death | 1436 – Engelbrekt Engelbrektsson, Swedish rebel leader (b. 1390) |
| 51520 | May.04 | Death | 1471 – Edward of Westminster, Prince of Wales (b. 1453) |
| 51521 | May.04 | Death | 1519 – Lorenzo de' Medici, Duke of Urbino (b. 1492) |
| 51522 | May.04 | Death | 1566 – Luca Ghini, Italian physician and botanist (b. 1490) |
| 51523 | May.04 | Death | 1571 – Pierre Viret, Swiss theologian and reformer (b. 1511) |
| 51524 | May.04 | Death | 1604 – Claudio Merulo, Italian organist and composer (b. 1533) |
| 51525 | May.04 | Death | 1615 – Adriaan van Roomen, Flemish priest and mathematician (b. 1561) |
| 51526 | May.04 | Death | 1626 – Arthur Lake, English bishop and scholar (b. 1569) |
| 51527 | May.04 | Death | 1677 – Isaac Barrow, English mathematician and theologian (b. 1630) |
| 51528 | May.04 | Death | 1684 – John Nevison, English criminal (b. 1639) |
| 51529 | May.04 | Death | 1729 – Louis Antoine de Noailles, French cardinal (b. 1651) |
| 51530 | May.04 | Death | 1734 – James Thornhill, English painter and politician (b. 1675) |
| 51531 | May.04 | Death | 1737 – Eustace Budgell, English journalist and politician (b. 1686) |
| 51532 | May.04 | Death | 1774 – Duke Anthony Ulrich of Brunswick (b. 1714) |
| 51533 | May.04 | Death | 1776 – Jacques Saly, French painter and sculptor (b. 1717) |
| 51534 | May.04 | Death | 1790 – Matthew Tilghman, American politician (b. 1718) |
| 51535 | May.04 | Death | 1799 – Tipu Sultan of Mysore (b. 1750) |
| 51536 | May.04 | Death | 1811 – Nikolay Kamensky, Russian general (b. 1776) |
| 51537 | May.04 | Death | 1824 – Joseph Joubert, French author (b. 1754) |
| 51538 | May.04 | Death | 1839 – Denis Davydov, Russian general and poet (b. 1784) |
| 51539 | May.04 | Death | 1858 – Aimé Bonpland, French botanist and explorer (b. 1773) |
| 51540 | May.04 | Death | 1859 – Joseph Diaz Gergonne, French mathematician and philosopher (b. 1771) |