Sada, Shimane

 was a town located in Hikawa District, Shimane Prefecture, Japan.
As of 2003, the town had an estimated population of 4,415 and a density of 40.20 persons per km². The total area was 109.83 km².
On March 22, 2005, Sada, along with the city of Hirata, the towns of Koryō, Taisha and Taki (all from Hikawa District), was merged into the expanded city of Izumo.