Witthoefft House is a historic home located at Armonk, Westchester County, New York. It was built in 1957, and is an International Style dwelling on a concrete slab foundation and stone covered concrete retaining walls. It features exposed structural steel, white glazed-brick walls, and full elevations of glass. The house is perched atop rock outcroppings in a semi-rural setting.
It was added to the National Register of Historic Places in 2011.