William Hartman Farmstead is a historic farmstead located at North Dansville near Dansville in Livingston County, New York.

The farmstead includes a vernacular Greek Revival-style farmhouse, built about 1848–1850, and four contributing support structures all of which date from the mid- to late-19th century.

The farmhouse is a 1+1⁄2-story, roughly L-shaped frame building resting on a stone foundation and sheathed in clapboard siding.

Contributing structures are two barns, carriage house and chicken coop.

This article about a historic property or district in Livingston County, New York, that is listed on the National Register of Historic Places, is a stub.