Tieton /ˈtaɪ.ətɒn/ is a city in Yakima County, Washington, United States. The population was 1,191 at the 2010 census.

In recent years, Tieton has suffered economic depression, with the decline of its fruit warehouses. As of 2007, a Seattle lawyer and the founding president of the art publishing house Marquand Books have been investing in the city and attempting to revive it, with a project they call project "Mighty Tieton."