Helton–Mayo Farm is a historic farm and national historic district located in Shawswick Township, Lawrence County, Indiana.

The house was built about 1837, and is a 1+1⁄2-story Federal style, hall and parlor plan brick dwelling.

Also on the property are the contributing Midwest triple portal barn (c. 1835–1845), wellhouse, corn crib, buggy shed, garage (1920s), and round roofed barn (1950).

[2] It was listed in the National Register of Historic Places in 1995.

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