| 74731 | June 30 | Death | 1607 – Caesar Baronius, Italian cardinal and historian (b. 1538) |
| 74732 | June 30 | Death | 1660 – William Oughtred, English minister and mathematician (b. 1575) |
| 74733 | June 30 | Death | 1666 – Alexander Brome, English poet and playwright (b. 1620) |
| 74734 | June 30 | Death | 1670 – Henrietta of England (b. 1644) |
| 74735 | June 30 | Death | 1704 – John Quelch, English pirate (b. 1665) |
| 74736 | June 30 | Death | 1708 – Tekle Haymanot I of Ethiopia (b. 1706) |
| 74737 | June 30 | Death | 1709 – Edward Lhuyd, Welsh botanist, linguist, and geographer (b. 1660) |
| 74738 | June 30 | Death | 1785 – James Oglethorpe, English general and politician, 1st Colonial Governor of Georgia (b. 1696) |
| 74739 | June 30 | Death | 1796 – Abraham Yates, Jr., American lawyer and politician (b. 1724) |
| 74740 | June 30 | Death | 1857 – Alcide d'Orbigny, French zoologist and paleontologist (b. 1802) |
| 74741 | June 30 | Death | 1882 – Charles J. Guiteau, American preacher and lawyer, assassin of James A. Garfield (b. 1841) |
| 74742 | June 30 | Death | 1882 – Alberto Henschel, German-Brazilian photographer and businessman (b. 1827) |
| 74743 | June 30 | Death | 1890 – Samuel Parkman Tuckerman, American organist and composer (b. 1819) |
| 74744 | June 30 | Death | 1899 – E. D. E. N. Southworth, American author (b. 1819) |
| 74745 | June 30 | Death | 1913 – Alphonse Kirchhoffer, French fencer (b. 1873) |
| 74746 | June 30 | Death | 1917 – Antonio de La Gándara, French painter and illustrator (b. 1861) |
| 74747 | June 30 | Death | 1919 – John William Strutt, 3rd Baron Rayleigh, English physicist and academic, Nobel Prize laureate (b. 1842) |
| 74748 | June 30 | Death | 1932 – Bruno Kastner, German actor, producer, and screenwriter (b. 1890) |
| 74749 | June 30 | Death | 1934 – Karl Ernst, German soldier (b. 1904) |
| 74750 | June 30 | Death | 1934 – Erich Klausener, German soldier and politician (b. 1885) |
| 74751 | June 30 | Death | 1934 – Gustav Ritter von Kahr, German lawyer and politician, Minister-President of Bavaria (b. 1862) |
| 74752 | June 30 | Death | 1934 – Gregor Strasser, German lieutenant and politician (b. 1892) |
| 74753 | June 30 | Death | 1934 – Kurt von Schleicher, German general and politician, 23rd Chancellor of Germany (b. 1882) |
| 74754 | June 30 | Death | 1941 – Yefim Fomin, Belarusian politician (b. 1909) |
| 74755 | June 30 | Death | 1941 – Aleksander Tõnisson, Estonian general and politician, 5th Estonian Minister of War (b. 1875) |
| 74756 | June 30 | Death | 1943 – Carlo Wieth, Danish actor (b. 1885) |
| 74757 | June 30 | Death | 1948 – Prince Sabahaddin, Turkish-Swiss sociologist and academic (b. 1879) |
| 74758 | June 30 | Death | 1949 – Édouard Alphonse James de Rothschild, French financier and polo player (b. 1868) |
| 74759 | June 30 | Death | 1951 – Yrjö Saarela, Finnish wrestler and coach (b. 1884) |
| 74760 | June 30 | Death | 1953 – Elsa Beskow, Swedish author and illustrator (b. 1874) |