Robert Orr Polygonal Barn

Robert Orr Polygonal Barn, also known as the Oxenrider Barn, is a historic twelve-sided building located in Plain Township, Kosciusko County, Indiana. The frame barn has two stories and was built between 1909 and 1911. It is topped by a three-pitch gambrel roof and a twelve-sided cupola.

It was listed on the National Register of Historic Places in 1992.