Misasa is a town located in Tōhaku District, Tottori Prefecture, Japan. It is also home to the official treasure of Sanbutsu-ji, the Misasa Onsen, and Okayama Hospital.
The name "Misasa" originates from the belief that one who stays to enjoy three mornings in the town's famous hot springs will find all of his ailments cured.
As of June 1, 2016, the town has an estimated population of 6,407 and a density of 27.4 persons per km². The total area is 233.46 km².
Misasa is for the most part a spa resort, boasting springs of radium-rich water, exhausting radon, a radioactive gas. It is believed that bathing one in such waters can be good for one's health, although there is no scientific consensus on whether doing so is detrimental or helpful to one's health. For this reason, the town of Misasa organizes a yearly Marie Curie festival – Marie Curie discovered radium.
The film Koitanibashi was shot in Misasa.