Ben Colter Polygonal Barn, also known as the Reinhart Barn, is a historic hexagonal barn located at St. Marys Township, Adams County, Indiana.

It was built about 1907, and is a six-sided, two-story, frame barn with a cone roof and cupola.

Attached to the barn is a drive-through shed.

[2] It was listed on the National Register of Historic Places in 1993.

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