The Treaty of London (), or, less correctly, the Pact of London ("Patto di Londra"), was a secret treaty between the Triple Entente and the Kingdom of Italy that brought Italy into World War I on the Allied side. It was signed in London on 26 April 1915 by Great Britain, France, Russia, and Italy. Its intent was to have Italy break away from its 33-year-old Triple Alliance with the German Empire and Austria-Hungary, both the main Central Powers in the war, and to switch its allegiance to the Triple Entente, the main Allies in the war. The main lure for Italy was a promise of large amounts of Austria-Hungary to the north of Italy and to the east across the Adriatic and the promise of funding by Britain. Italy, which had remained neutral for the first nine months of the war, promised to enter the war within a month.