Clarence DeMar (1888-1958)
Jun 7 American marathon runner and 7-time winner of the Boston Marathon, born in Madeira, Ohio
- Jun 8 Poul Schierbeck, Danish organist and composer, born in Copenhagen (d. 1949)
- Jun 9 Adrian Shaposhnikov, Russian composer, born in St Peterberg (d. 1967)
- Jun 9 Hugo Kauder, Austrian composer, born in Tovačov (d. 1972)
- Jun 10 Leo Weismantel, German writer (Der Reiter der Apocalypse), born in Obersinn, Germany (d. 1964)
- Jun 11 Bartolomeo Vanzetti, Italian anarchist (Sacco and Vanzetti Trial), born in Villafalletto, Italy (d. 1927)
- Jun 12 Zygmunt Janiszewski, Polish mathematician, born in Warsaw, Poland (d. 1920)
- Jun 13 Fernando Pessoa, Portuguese poet and writer (The Book of Disquiet), born in Lisbon, Kingdom of Portugal (d. 1935)
- Jun 15 Ramon Lopez Velarde, Mexican poet (La Sangre Devota)
- Jun 16 Bobby Clark, American vaudevillian, clown and actor (in comedy act with Paul McCullough), born in Springfield, Ohio (d. 1960)
- Jun 16 Peter Stoner, American mathematician and astronomer (d. 1980)
- Jun 17 Bernhard van den Sigtenhorst Meyer, Dutch composer, born in Amsterdam (d. 1953)
- Jun 17 Heinz Guderian, German general during WWII, born in Kulm, Kingdom of Prussia, German Empire (d. 1954)
- Jun 18 Margarita Xirgu, Catalan stage actress, director and political radical (Bloody Wedding, Mariana Pineda), born in Barcelona, Spain (d. 1969)
- Jun 22 Harold Burton, U.S. Supreme Court justice (d. 1964)
- Jun 23 Bronson M. Cutting, American politician (d. 1935)
- Jun 23 Lee Moran, American actor (Circus Clown), born in Chicago, Illinois (d. 1961)
- Jun 24 Gerrit T. Rietveld, Dutch architect (Juliana Hall, Sonsbeek Pavilion)
- Jun 26 Paul Niggli, Swiss mineralogist (crystal structures), born in Zonfingen, Switzerland (d. 1953)
- Jun 27 Antoinette Perry, American stage actress, theater director, co-founder of the American Theatre Wing, and namesake of the Tony Award, born in Denver, Colorado (d. 1946)
- Jun 27 Lewis Bernstein Namier, English historian, born in Wola Okrzejska, Poland (d. 1960)
- Jun 28 George Challenor, West Indian cricketer (pioneering West Indian batsman), born in St. Michael, Barbados (d. 1947)
- Jun 29 Joseph "Squizzy" Taylor, Australian gangster, born in Brighton, Victoria (d. 1927