Wilson Douglas Watson (February 16, 1922 – December 19, 1994) was a United States Marine Corps private who received the Medal of Honor for his heroic actions on Iwo Jima during World War II. He single-handedly killed 90 enemy soldiers, thus enabling his platoon to advance, earning him the name "One-Man Regiment" of Iwo Jima. After World War II, Watson continued his military service in the United States Army. At the time he retired, he held the rank of Staff Sergeant.