The Rensselaer D. Hubbard House, (also known as the Hubbard House) is a historic house in Mankato, Minnesota, United States. Originally a private home, it is currently a museum. The building was placed on the National Register of Historic Places on June 7, 1976. The house was built in 1871 for Rensselaer D. Hubbard, a successful businessman. It was designed by Silas Barnard in the French Second Empire style.