- Jun 1 The People's Republic of China begins filling the reservoir behind the Three Gorges Dam
- Jun 2 Europe launches its first voyage to another planet, Mars. The European Space Agency's Mars Express probe launches from the Baikonur space centre in Kazakhstan.
Historic Publication
Jun 3 Danielle Steel’s novel “Sunset in St. Tropez” is published

Danielle Steel
- Jun 5 A severe heat wave across Pakistan and India reaches its peak, as temperatures exceed 50°C (122°F) in the region
- Jun 7 135th Belmont: Jerry Bailey aboard Empire Maker wins in 2:28.26
- Jun 7 French Open Women's Tennis: In an all-Belgian final, Justine Henin-Hardenne outclasses Kim Clijsters 6-0, 6-4 for her 1st of 7 Grand Slam singles titles
- Jun 8 LPGA Championship Women's Golf, DuPont CC: Sweden's Annika Sörenstam wins in a playoff over Grace Park of South Korea with a par on the first sudden death hole
- Jun 8 57th Tony Awards: Hairspray & Take Me Out win
- Jun 8 French Open Men's Tennis: Spaniard Juan Carlos Ferrero claims his lone major title; beats Dutchman Martin Verkerk 6-1, 6-3, 6-2
- Jun 8 Senior PGA Championship Men’s Golf, Aronimink GC, PA: John Jacobs wins his only Champions Tour major title with a 2 stroke margin to runner-up Bobby Wadkins
- Jun 9 Stanley Cup Final, Meadowlands Arena, East Rutherford, NJ: New Jersey Devils beat Mighty Ducks of Anaheim, 3-0 for 4-3 series win
Spirit Rover Begins Mars Mission
Jun 10 The Spirit Rover is launched, beginning NASA's Mars Exploration Rover mission
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Film Release
Jun 10 "Wicked", starring Idina Menzel and Kristin Chenoweth, officially opens at the Curran Theatre in San Francisco

Idina Menzel
Cricket's T20 is Born. Howzat!?
Jun 13 English county cricket teams play the 1st official Twenty20 matches
Read Article- Jun 14 WLAF World Bowl 11, Hampden Park, Glasgow: Frankfurt Galaxy beats Rhein Fire, 35-16
Event of Interest
Jun 15 NBA Finals: San Antonio Spurs beat New Jersey Nets, 88-77 in Game 6 for franchise's second title; MVP: Tim Duncan

Tim Duncan
Historic Publication
Jun 17 Moneyball, a book about the 2003 Oakland Athletics baseball team and GM Billy Beane's sabermetric approach, inspired by Bill James, is published

Bill James
Event of Interest
Jun 18 Google launches AdSense, a program that enables website publishers to serve ads targeted to the specific content of their individual web pages, many of which like On This Day (then HistoryOrb.com) go on to start their own publishing businesses

Susan Wojcicki
Historic Publication
Jun 21 "Harry Potter and the Order of the Phoenix" the 5th book of the series by J. K. Rowling is published worldwide in English

J. K. Rowling
Baseball Record
Jun 23 Barry Bonds steals second base against the LA Dodgers, becoming the first player in MLB history to have 500 career homers and 500 steals

Barry Bonds
- Jun 26 The U.S. Supreme Court rules in Lawrence v. Texas that gender-based sodomy laws are unconstitutional.
Event of Interest
Jun 26 NBA Draft: St. Vincent–St. Mary HS (Akron, Ohio) small forward LeBron James first pick by Cleveland Cavaliers

LeBron James
- Jun 27 The United States National Do Not Call Registry, formed to combat unwanted telemarketing calls and administered by the Federal Trade Commission, enrolls almost three-quarters of a million phone numbers on its first day.
Film Premier
Jun 28 "Pirates of the Caribbean: The Curse of the Black Pearl", directed by Gore Verbinski, starring Johnny Depp, Keira Knightley and Orlando Bloom, premieres at Disneyland
Event of Interest
Jun 29 US Senior Open Men's Golf, Inverness Club: Bruce Lietzke wins by 2 strokes from Tom Watson

Tom Watson