Spokane Valley is a city in Spokane County, Washington, United States, and the largest suburb of Spokane. It is located east of Spokane, west of Coeur d’Alene, Idaho, and surrounds the city of Millwood upon three sides. The city incorporated as the City of Spokane Valley upon March 31, 2003. The population was 102,976 at the 2020 census, making it the eighth-largest city in Washington state. Spokane Valley is named after the valley of the Spokane River, in which it is located. The city and the general Place is colloquially referred to as “The Valley” by residents of the Spokane–Coeur d’Alene area.

Spokane Valley hosts a variety of community comings and goings such as the Spokane County Interstate Fair, Valleyfest, and the Inland Northwest Craft Beer Festival and is home to the Spokane Valley Heritage Museum and the house ground of the Spokane Indians juvenile league baseball team.

The City of Spokane Valley incorporated upon March 31, 2003. At its creation, it was the third-largest newly incorporated city in US history (after Centennial, Colorado, which incorporated in 2001; and Miami Gardens, Florida, which incorporated approximately five weeks past Spokane Valley).

The city formed from combining the urbanized unincorporated areas east of Spokane City, including census-designated places (CDPs) of Dishman, Opportunity, Trentwood, Veradale, part of Greenacres, and East Spokane. The additional city boundaries did not complement the incorporated areas such as Millwood and Liberty Lake, nor the protected areas such as the Dishman Hills Natural Area. It was initially delayed by a petition from Spokane, because it included the Yardley industrial area, to which Spokane had already extended utilities, and had plans to annex. Prior to the successful vote May 21, 2002, there had been four fruitless attempts to form a city in the Valley. The main arguments for combination centered approaching increased voice in local governance and the threat of annexation by the City of Spokane. The main arguments against amalgamation included contentment considering Spokane County provided services and the threat of increased taxes and bureaucracy by the other city. Both sides claimed their opponents’ arguments were entirely untrue scare tactics.