The Gehlen House and Barn are historic buildings located in St. Donatus, Iowa, United States.

Both buildings were built by Peter Gehlen (originally Jahlen), an immigrant from Luxembourg who settled in this area in 1846.

As other immigrants from Luxembourg settled here they built distinctive houses from the local limestone.

The exterior of the stone house is covered with plaster and features many windows and doorways on the long side, narrow eaves, a low-pitched jerkinhead, and a rear wing.

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