- Jun 3 Henning Mankell, Swedish composer, born in Härnösand, Sweden (d. 1930)
- Jun 3 Aristides Agramonte y Simoni, Cuban-American Physician, Pathologist and Bacteriologist (yellow fever), born in Camagüey, Cuba (d. 1931)
- Jun 5 James Connolly, Irish socialist (founder of the Irish Socialist Republican Party), born in Cowgate, Edinburgh, Scotland (d. 1916)
Robert Falcon Scott
Jun 6 Robert Falcon Scott, British leader of ill-fated south pole expedition, born in Plymouth, England (d. 1912)
Robert Falcon Scott
- Jun 7 Charles Rennie Mackintosh, Scottish architect, designer, and illustrator, born in Townhead, Glasgow (d. 1928)
- Jun 14 Karl Landsteiner, Austrian immunologist and pathologist (Nobel 1930), born in Baden bei Wien, Austria-Hungary (d. 1943)
- Jun 18 Miklos Horthy von Nagybanya, Hungarian admiral/regent (1910-44)
- Jun 19 Heinrich Schenker, Austrian musicologist (Urlinie) know for his Schenkerian analysis of music, born in Wisniowczyki, Austrian Galicia (d. 1935)
- Jun 20 Helen Miller Shepard, American philanthropist who established Hall of Fame, born in Manhattan, New York (d. 1938)
- Jun 21 Edwin Stephen Goodrich, English zoologist, born in Weston-super-Mare, Somerset, England (d. 1946)
- Jun 29 George Ellery Hale, American astronomer (discovery of magnetic fields in sunspot), born in Chicago, Illinois (d. 1938)
- Jun 30 C. V. France, British actor (The Skin Game, Adventure in Blackmail), born in Bradford, England (d. 1949)