What was the formal surrender document signed aboard USS Missouri in 1945 called?

The formal surrender document signed aboard USS Missouri in 1945 was the Japanese Instrument of Surrender.

Representatives of Japan signed the instrument on 2 September 1945 in Tokyo Bay. General Douglas MacArthur signed for the Allied powers, while Mamoru Shigemitsu signed for the Japanese government and General Yoshijirō Umezu signed for Japan’s armed forces.

The document stated that Japan accepted the provisions of the Potsdam Declaration and surrendered unconditionally to the Allied powers. Additional representatives signed for the United States, China, the United Kingdom, the Soviet Union, Australia, Canada, France, and New Zealand.

The instrument is not the same as the Potsdam Declaration. The declaration was the Allied demand issued before Japan’s surrender; the instrument was the document that formally recorded Japan’s capitulation. A later peace treaty, the Treaty of San Francisco, formally ended the state of war with many Allied countries in 1951.