Henry Eugene Davies (July 2, 1836 – September 7, 1894) was an American soldier, writer, public official and lawyer. He served in the Union Army as a brigadier general of volunteers in cavalry service during the American Civil War ("Civil War") and was promoted to the grade of major general of volunteers at the end of the war. Davies was one of the few nonprofessional soldiers in the Union cavalry in the East to be promoted to the grade of general. He led his brigade in several major battles, especially during the Overland Campaign, the Battle of Trevilian Station, the Siege of Petersburg and the Appomattox Campaign at the end of the war.