Robert Bacon (July 5, 1860–May 29, 1919) was an American statesman and diplomat. A graduate of Harvard University he worked in the business world, including for J.P. Morgan, for many years, until he was named Assistant Secretary of State in 1905, a position which held until 1909— he was Acting Secretary of State while Elihu Root was in South America in 1906. He was U.S. Secretary of State in President Teddy Roosevelt's Cabinet from January 27, 1909 and served until March 5, 1909. As Secretary of State, obtained the advice and consent of the Senate to the canal treaties of 1909 with Colombia and Panama. He served as United States Ambassador to France from 1909 until 1912 and worked for John J. Pershing during the term of American involvement in World War I.