William H. H. Graham House, also known as the Stephenson Mansion, is a historic home located in the Irvington Historic District, Indianapolis, Marion County, Indiana.

It was built in 1889, and is a 2+1⁄2-story, four-bay Colonial Revival style frame dwelling.

The house features a front portico supported by four, two-story Ionic order columns added in 1923, and a two-story bay window.

In the 1920s it was the home of D. C. Stephenson, head of the Indiana Ku Klux Klan.

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