The Balfour Mission, also referred to as the Balfour Visit, was a formal diplomatic visit to the United States by the British Government during World War I, shortly after the United States declaration of war on Germany (1917).

Arthur James Balfour, 1st Earl of Balfour,, also known as Lord Balfour, was a British statesman and Conservative politician who served as Prime Minister of the United Kingdom from 1902 to 1905. As foreign secretary in the Lloyd George ministry, he issued the Balfour Declaration of 1917 on behalf of the cabinet, which supported a "home for the Jewish people" in Palestine.