- Jun 2 Constantly AM Cap, Flemish poet/etcher
- Jun 8 John Q. A. Brackett, American politician, 36th Governor of Massachusetts (1890-91), born in Bradford, New Hampshire (d. 1918)
- Jun 11 Prince Alfred, Liechtenstein noble and politician, born in Prague, Czech Republic (d. 1907)
- Jun 11 Carl von Linde, German engineer and chemist who invented mechanical refrigeration, born in Berndorf, Germany (d. 1934)
- Jun 16 David Herold, American pharmacist's assistant who was part of the conspiracy to assassinate Abraham Lincoln, born in Maryland (d. 1865)