Kellogg is a city in the Silver Valley of Shoshone County, Idaho, United States, in the Idaho Panhandle region. The city lies near the Coeur d'Alene National Forest and about 36 miles (58 km) east-southeast of Coeur d'Alene along Interstate 90. As of the 2000 census, the city had a total population of 2,395, down by nearly a third from its population in 1980.

Kellogg is named after a prospector named Noah Kellogg. Legend has it that his donkey wandered off during the morning of September 4, 1885; Kellogg found the animal at a large outcropping of galena, which became the site of the Bunker Hill and Sullivan Mines; those mines led to the founding of Kellogg, a city where a local sign reads "This is the town founded by a jackass and inhabited by his descendants." Noah Kellogg is buried in the city's cemetery.