Auckland Campbell Geddes, 1st Baron Geddes, was a British academic, soldier, politician and diplomat. He was a member of David Lloyd George's coalition government during the First World War and also served as Ambassador to the United States.

Liberal David Lloyd George formed a coalition government in the United Kingdom in December 1916, and was appointed Prime Minister of the United Kingdom by King George V. It replaced the earlier wartime coalition under H. H. Asquith, which had been held responsible for losses during the Great War. Those Liberals who continued to support Asquith served as the Official Opposition. The government continued in power after the end of the war in 1918, though Lloyd George was increasingly reliant on the Conservatives for support. After several scandals including allegations of the sale of honours, the Conservatives withdrew their support after a meeting at the Carlton Club in 1922, and Bonar Law formed a government.