Corporal William A. Clark (July 24, 1828 – January 9, 1916) was an American soldier of the Civil War who, during a battle at Nolensville, Tennessee on 15 February 1863, successfully defended a wagon train. For his actions he earned the Medal of Honor. He served with the 2nd Minnesota Volunteer Infantry Division. He was born in Pennsylvania, lived in Shelbyville and is buried in Nicollet, Minnesota.