The Horn House is a historic residence located northwest of Decorah, Iowa, United States.

The significance of this house is the unique architectural combination of the Italianate and Georgian styles found in Iowa.

The two-story brick main block features a low-hipped roof, wide eaves and a plain wood cornice.

The house was built by Henry Harcourt Horn, a native of Hertfordshire who was part of the English Colony in the Decorah area.

This article about a property in Winneshiek County, Iowa on the National Register of Historic Places is a stub.