What was the 1945 document called that formally recorded Japan's surrender to the Allies?

The document that formally recorded Japan's surrender to the Allies was called the Japanese Instrument of Surrender.

This printed agreement established Japan's capitulation under the terms accepted by its government. It was signed aboard USS Missouri in Tokyo Bay on 2 September 1945. Japanese officials signed first, followed by representatives of the Allied nations.

The document was prepared in two versions: a leather-bound copy for the Allied powers and a canvas-backed copy for Japan. It listed the governments represented at the ceremony, including the United States, China, the United Kingdom, the Soviet Union, Australia, Canada, France, the Netherlands, and New Zealand.

The Instrument of Surrender ended active hostilities, but it was not the same as a later peace treaty. The Treaty of San Francisco, signed in 1951 and effective in 1952, formally restored Japan's sovereignty after the Allied occupation.