John Williams Walker Fearn (January 13, 1832 – April 7, 1899)[1] was an American diplomat.

[4] Following Yale University, Fearn continued to study law and was admitted to the Mobile bar in 1853.

[5] He spent most of the 1850s on the staffs of the American embassies in Belgium and Mexico, then joined the Confederate diplomatic corps when the Civil War broke out in 1861.

After serving on unsuccessful missions to Spain, France, Russia, and Mexico, Fearn moved to New Orleans when the war was over to practice law.

[1] He later served as chief of the Department of Foreign Affairs for the World's Columbian Exposition in Chicago in 1893.