thumb|Koryō Seafood Wholesale Market was a town located in Hikawa District, Shimane Prefecture, Japan.
As of 2003, the town had an estimated population of 5,843 and a density of 262.49 persons per km<sup>2</sup>. The total area was 22.26 km<sup>2</sup>.
On March 22, 2005, Koryō, along with the city of Hirata, the towns of Sada, Taisha and Taki (all from Hikawa District), was merged into the expanded city of Izumo.