David Walker (April 13, 1763 – March 1, 1820) was a U.S. Representative from Kentucky, brother of George Walker and grandfather of James David Walker.
Born in Brunswick County, Virginia, Walker attended public and private schools. He served in the Revolutionary War as a private under General Lafayette. He was at the surrender of Cornwallis at Yorktown. He moved to Logan County, Kentucky. He served as clerk of county and circuit courts. He served as member of the State house of representatives from 1793 to 1796. He served as major on the staff of Governor Shelby of Kentucky in the Battle of the Thames during the War of 1812.
Walker was elected as a Democratic-Republican to the Fifteenth and to the succeeding Congress (March 4, 1817-March 1, 1820). He died on March 1, 1820, in Washington, D.C.. He was interred in the Congressional Cemetery.