- Jun 8 Natalia Janotha, Polish pianist and composer, born in Warsaw, Poland (d. 1932)
- Jun 14 Andrey Markov, Russian mathematician (Markov Chain), born in Ryazan, Russian Empire (d. 1922)
- Jun 19 Elbert Hubbard, American editor, publisher and author (Message to Garcia), born in Bloomington, Illinois (d. 1915)
- Jun 22 Henry Rider Haggard, British author (King Solomon's Mines, She, Dawn), born in Bradenham, England (d. 1925)
- Jun 30 Gerrit Kalff, Dutch professor (history of Dutch writers), born in Zwolle, Netherlands (d. 1923)