Event of Interest
Jul 1 Albert Einstein introduces his theory of special relativity

Albert Einstein
- Jul 3 Kuyper government forms in Holland
- Jul 3 American boxer Marvin Hart scores a 12th round KO of Jack Root in Reno, Nevada for the vacant world heavyweight title
- Jul 6 Alfred Deakin becomes Prime Minister of Australia for the second time
- Jul 7 127°F (53°C), Parker Ariz (state record)
- Jul 8 Part of Angel Island in San Francisco Bay allocated for Immigration Detention Center
- Jul 8 Wimbledon Women's Tennis: May Sutton becomes first American player to win the singles title at Wimbledon; beats Dorothea Chambers 6-3, 6-4
- Jul 8 Wimbledon Men's Tennis: Home town favourite Laurence Doherty wins his 4th consecutive Wimbledon singles title; beats Norman Brookes of Australia 8-6 6-2 6-4
- Jul 8 The soldiers of the Russian battleship "Potemkin" who mutinied, surrender to Romanian authorities, who turn ship over to Russian authorities soon after
Event of Interest
Jul 10 Dutch Queen Wilhelmina opens Technical Hague court

Wilhelmina of the Netherlands
Event of Interest
Jul 11 Black intellectuals and activists lead by W.E.B. Du Bois organize the civil rights Niagara Movement

W.E.B. Du Bois
- Jul 12 The British and Japanese renew their alliance (of January 1902) for 10 years and agree to provide mutual support if attacked by other power
- Jul 22 Philadelphia Athletic's Weldon Henley no-hits St Louis Browns, 6-0
- Jul 24 International Lawn Tennis Challenge, Wimbledon: Laurence Doherty & Reggie Doherty beat Holcombe Ward & Beals Wright 8-10, 6-2, 6-2, 4-6, 8-6 to give British Isles an unassailable 3-0 lead over US (ends 5-0)
Treaty of Interest
Jul 24 Tsar Nicholas II (Russia) and Emperor Wilhelm II (Germany) sign the Björkö Treaty, whereby each country agrees to come to the other's defense if attacked by European powers

Nicholas II

Wilhelm II
Agreement of Interest
Jul 29 US Secretary of War William Howard Taft makes secret agreement with Japanese Prime Minister Katsura agreeing to Japanese free rein in Korea in return for non-interference with the US in the Philippines

William Howard Taft