- Jul 1 Saturn Orbit insertion of Cassini-Huygens begins at 01:12 UTC and ends at 02:48 UTC.
- Jul 2 ASEAN Regional Forum accepts Pakistan as its 24th member.
- Jul 3 Official opening of Bangkok's subway system.
Wimbledon Women's Tennis
Jul 3 Wimbledon Women's Tennis: Maria Sharapova becomes first Russian player to win Wimbledon beating defending champion Serena Williams 6-1, 6-4
Maria Sharapova
Serena Williams
- Jul 4 The cornerstone of the Freedom Tower is laid on the site of the World Trade Center in New York City. (This was largely a symbolic event; actual construction would not start for several weeks)
Wimbledon Men's Tennis
Jul 4 Wimbledon Men's Tennis: Roger Federer wins the second of 5 straight Wimbledon singles titles beating American Andy Roddick 4-6, 7-5, 7-6, 6-4
Roger Federer
Andy Roddick
- Jul 4 UEFA European Championship Final, Estádio da Luz, Lisbon, Portugal: In a huge upset Greece beats host nation Portugal, 1-0
US Women's Golf Open
Jul 4 US Open Women's Golf, Orchards GC: Meg Mallon shoots final round 65 (−6) to win her second US title, 2 strokes ahead of runner-up Annika Sörenstam of Sweden
Meg Mallon
- Jul 5 First Indonesian presidential election by the people - first round (eventually won by Susilo Bambang Yudhoyono)
- Jul 11 Canadian Open Women's Golf, Legends on the Niagara GC: Meg Mallon wins by 4 strokes from Beth Daniel
- Jul 11 Senior Players Championship Men's Golf, TPC of Michigan: Englishman Mark James wins his lone career major title by 1 stroke from José Maria Cañizares of Spain
- Jul 13 75th All Star Baseball Game: AL wins 9-4 at Minute Maid Park, Houston
- Jul 16 Millennium Park, considered the first and most ambitious architectural project in the early 21st century for Chicago, is opened to the public by Mayor Richard M. Daley.
Event of Interest
Jul 16 Martha Stewart is sentenced to five months in prison plus five months in home confinement for lying to federal investigators
Martha Stewart
Event of Interest
Jul 17 Former South African President Nelson Mandela calls for commitment by the world to take action against AIDS
Nelson Mandela
Sports Awards
Jul 18 12th ESPY Awards: Lance Armstrong, Diana Taurasi win
Lance Armstrong
- Jul 21 The United Kingdom government publishes Delivering Security in a Changing World, a paper detailing wide-ranging reform of the country's armed forces
- Jul 22 37th San Diego Comic-Con International opens at San Diego Convention Center
- Jul 25 91st Tour de France: no winner (Lance Armstrong disqualified)
- Jul 25 British Senior Open Men's Golf, Royal Portrush: Pete Oakley wins by 1 stroke from fellow American Tom Kite and Eduardo Romero of Argentina
- Jul 25 Copa América Final, Estadio Nacional, Lima: Brazil beats Argentina, 4-2 on penalties; 2-2 after extra time
