Saigō (西郷町 Saigō-chō) was a town located on the island of Dōgo in Oki District, Shimane, Japan.
On October 1, 2004, Saigō was merged the villages of Fuse, Goka and Tsuma, all from Oki District, to form the new town of Okinoshima.
As of 2003, the town had an estimated population of 12,855 and a density of 105.07 persons per km². The total area is 122.35 km².
A set of two station bells designated as Important Cultural Property of Japan is located at the Oki family treasure hall (億岐家宝物館 Oki-ke Hōmotsu-kan?) in Saigō.