- Jun 3 1st trade show at Atlantic City Convention Center (electric light)
- Jun 3 Chile and Peru sign the Treaty of Lima, finally resolving their border dispute from the War of the Pacific (1879–83). Chile keeps Arica and Peru regains Tacna.
Moody Defending French Champion
Jun 3 French Championship Women's Tennis: Defending champion Helen Wills Moody beats Simonne Mathieu 6-3, 6-4
Lacoste Wins 3rd French Title
Jun 3 French Championships Men's Tennis: René Lacoste wins his 3rd French title, beating fellow Frenchman Jean Borotra 6-3, 2-6, 6-0, 2-6, 8-6
- Jun 5 Ramsey MacDonald forms minority Labour government in Britain
- Jun 7 Margaret Bondfield becomes 1st British female cabinet minister (Labour)
- Jun 7 Vatican City becomes a sovereign state
- Jun 8 61st Belmont: Mack Garner aboard Blue Larkspur wins in 2:32.8
- Jun 8 Venezuelan rebel Rafael Urbina overthrows Fort Amsterdam, Curacao kidnap governor Fruytier
- Jun 9 Venezuelan rebel Urbina lets Dutch/Curacaose hostages free
- Jun 14 Prussia and Vatican sign Concord
- Jun 15 1st time NY curb stock exchange transacts more business than NY Exch
- Jun 16 Otto E. Funk, 62, ends marathon walk (NY to SF, 4165 miles in 183 days)
- Jun 22 Mel Ott (Giants) homers off Leo Sweetland (Phillies) in doubleheader
Hoover Dam Authorized
Jun 25 US President Herbert Hoover authorizes building of Boulder Dam (Hoover Dam)
- Jun 26 ENKA/Vereinigte Glanzstoff Factory merge AKU (Genl Kunstzijde Union)
- Jun 27 1st color Television demo, performed by Bell Laboratories in NYC
- Jun 27 German President Paul von Hindenburg refuses to pay the German reparation debt of WWI
- Jun 29 1st high-speed jet wind tunnel completed Langley Field, California
- Jun 29 31.1°C (88°F) highest temperature on this day in De Bilt, Netherlands
- Jun 29 Mexico & Vatican sign Concord
US Men's Open
Jun 30 US Open Men's Golf, Winged Foot CC: Bobby Jones wins his third US Open title in a 36-hole playoff, dominating Al Espinosa by 23 strokes on the West Course
Authors
Civil Rights Activists
Inventors
Kings
Revolutionaries
Scientists