Fitzroy House is a Victorian building on the High Street in Lewes, East Sussex, England. It was originally Fitzroy Memorial Library, designed by architect George Gilbert Scott in neo-Gothic style and built in 1862. In 1897 it became Lewes' first public library, until 1956 when it became offices. It was left empty and decaying for 20 years before being renovated and used as a family home for 40 years, as well as an occasional venue for music and theatre. In 2016 it was sold. The main focal point of the house is the double-height Octagon Room.