Wapato is a town in Yakima County, Washington, United States. The population was 4,607 at the 2020 census. The town was founded in 1885 by Indian Postmaster Alexander McCredy as a railroad stop on the Northern Pacific Railroad as Simcoe, Washington. Wapato was officially incorporated on September 16, 1908, with a population of around 300 people. The name wapato comes from the Chinook Jargon word for an edible root, probably originally derived from the Upper Chinook language.
Through the 1970s and into 1990, Wapato produced some of the largest volume potato and apple crops, as tonnage per acre. It features local wineries (Treveri, Owen Roe), farmers markets, and outdoor activities.