Wikipedia:Selected anniversaries/September 29
- 1364 – English forces defeated the French at the Battle of Auray in the French town of Auray, the decisive confrontation of the Breton War of Succession, a part of the Hundred Years' War
- 1829 – British Home Secretary Robert Peel (pictured) founded the Metropolitan Police of Greater London, also known as the Met.
- 1938 – Adolf Hitler, Benito Mussolini, British Prime Minister Neville Chamberlain, and French Prime Minister Édouard Daladier signed the Munich Agreement, stipulating that Czechoslovakia must cede the Sudetenland to Germany.
- 1941 – German Nazis aided by their collaborators began the Babi Yar massacre in Kiev, Ukraine, killing over 30,000 Jewish civilians in two days and thousands more in the months that followed.
- 1954 – Twelve countries signed a convention establishing the European Organization for Nuclear Research (CERN), currently the world's largest particle physics laboratory.
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