William Robert Button (December 3, 1895 – April 15, 1921) was a United States Marine Corps corporal who received the Medal of Honor for his actions in killing Haitian nationalist leader Charlemagne Peralte on October 31–November 1, 1919.

[1] The medal was approved by the Secretary of the Navy on June 10, 1920, and presented by the Major General Commandant of the Marine Corps, John A. Lejeune, at a ceremony in Washington, D.C., July 1, 1920.

At the request of his father his remains were returned to the United States and he is buried at Valhalla Cemetery, Saint Louis, Missouri.

[2] The President of the United States takes pride in presenting the MEDAL OF HONOR to For service as set forth in the following Citation: For extraordinary heroism and conspicuous gallantry and intrepidity in actual conflict with the enemy near GRANDE RIVIERE Republic of Haiti, on the night of October 31 - November 1, 1919, resulting in the death of Charlemagne Peralte, the supreme bandit chief in the Republic of Haiti, and the killing and capture and dispersal of about twelve hundred (1,200) of his outlaw followers.

Corporal William R. Button not only distinguished himself by his excellent judgment and leadership, but unhesitatingly exposed himself to great personal danger, when the slightest error would have forfeited not only his life but the lives of the detachments of Gendarmerie under his command.