Ōda is a city in Shimane Prefecture, Japan. The city has a total area of 436.11 km2. As of 1 December 2022, the city had an estimated population of 32,838 in 15557 households and a population density of 75 persons per km2. The total area of the city is 435.71 square kilometres (168.23 sq mi). Ōda is home to the Iwami Ginzan Silver Mine, a World Heritage Site.

Shimane Prefecture is a prefecture of Japan located in the Chūgoku region of Honshu. Shimane Prefecture is the second-least populous prefecture of Japan at 665,205 and has a geographic area of 6,708.26 km2. Shimane Prefecture borders Yamaguchi Prefecture to the southwest, Hiroshima Prefecture to the south, and Tottori Prefecture to the east.