WEBOkinawa (city) / 26.33417°N 127.80556°E / 26.33417; 127.80556. Okinawa City (沖縄市, Okinawa-shi, Japanese: [okinawa]) is the second-largest city in Okinawa Prefecture, Japan, following Naha, the capital city. [1] It is located in the central part of the island of Okinawa, about 20 kilometres (12 mi) north of Naha.