Nanjō is a city located in the southern part of Okinawa Island in Okinawa Prefecture, Japan. Translated literally, the name Nanjō means "southern castle". Many castle ruins, called gusuku in the Okinawan language, can be found throughout the city. The modern city of Nanjō was established on January 1, 2006, from the merger of the town of Sashiki, and the villages of Chinen, Ōzato and Tamagusuku.