Nine Allied nations supplied national representatives who signed Japan’s surrender. Their representatives signed the Japanese Instrument of Surrender after Douglas MacArthur signed as Supreme Commander for the Allied powers.
The nine nations were the United States, China, the United Kingdom, the Soviet Union, Australia, Canada, France, the Netherlands, and New Zealand. Chester Nimitz signed for the United States, followed by representatives of the other eight nations in the ceremony’s specified order.
The total can be miscounted because MacArthur signed before the national representatives, but he signed in his command role rather than as one of the nine national delegates. Japan also had two principal signatories: Foreign Minister Mamoru Shigemitsu for the government and General Yoshijirō Umezu for Imperial General Headquarters. Together, these signatures documented the surrender of both Japan’s civilian government and military command.