The Interior Telephone Company Building is a historic structure located in Grinnell, Iowa, United States.

Iowa was one of the leading Midwest states to adopt the telephone as a means of communication.

The Interior Telephone Company was established to serve the Grinnell area.

The telephone equipment was housed in the basement, and office space was located on the main floor.

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