Knower House is a historic home located at Guilderland in Albany County, New York. It was built about 1800 and is a two-story frame house in the Georgian Colonial style. It accentuates a centroidal entrance and second story Palladian window. While occupied by Benjamin Knower, future New York Governor William L. Marcy married Cornelia Knower at the house in 1824.
A historical marker in front of the house states: <blockquote>"Knower House
Est. as hat factory about 1800
by Benjamin Knower
Gov. William L. Marcy
Married Cornelia Knower
in this house"</blockquote>It was listed on the National Register of Historic Places in 1982.