Decorah High School is a public high school located in Decorah, Iowa. The school colors are red and royal blue, and the mascot is the Vikings. It is a part of the Decorah Community School District.

Decorah is a city in and the county seat of Winneshiek County, Iowa, United States. The population was 7,587 at the time of the 2020 census. Decorah is located at the intersection of State Highway 9 and U.S. Route 52, and is the largest community in Winneshiek County.