This is a list of selected July 26 anniversaries that appear in the "On this day" section of the Main Page. To suggest a new item, in most cases, you can be bold and edit this page. Before doing so, please review the selected anniversaries guidelines. If your suggestion is potentially controversial or relates to a day currently or soon to appear on the Main Page, post it on the talk page instead.
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- Only four or five events are featured each day; therefore, not all important or significant events can be included.
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July 26: Independence Day in Liberia (1847) and Maldives (1965)
- 811 – Bulgarian forces led by Khan Krum defeated the Byzantines at the Battle of Pliska, annihilating almost the whole army and killing Byzantine Emperor Nikephoros I.
- 1139 – After a victory over the Almoravid Moors at the Battle of Ourique, Afonso the Conqueror was proclaimed the first king of an independent Portugal by his soldiers.
- 1822 – José de San Martín met with Simón Bolívar in Guayaquil to plan for the future of Peru and South America in general.
- 1882 – Richard Wagner's opera Parsifal (pictured) premiered at the Festspielhaus in Bayreuth, Germany.
- 1908 – Unable to use the services of U.S. Secret Service agents as investigators because of a federal law, U.S. Attorney General Charles Joseph Bonaparte established what is now known as the Federal Bureau of Investigation to organize his own staff of special agents.