Willard Moon Smith (1840-March 26, 1918) was a sergeant serving in the United States Marine Corps during the American Civil War who received the Medal of Honor for his actions in the Battle of Mobile Bay.

He was a corporal assigned to the Marine Detachment aboard the USS Brooklyn when it was sent to fight in the American Civil War during the Battle of Mobile Bay.

[citation needed] Rank and organization: Corporal, U.S. Marine Corps.

Brooklyn during action against rebel forts and gunboats, and with the ram Tennessee in Mobile Bay, 5 August 1864.

Smith fought his gun with skill and courage throughout the furious 2 hour battle which resulted in the surrender of the rebel ram Tennessee.