Fanhams Hall is an 18th-century Queen Anne House-style country house in Wareside, Hertfordshire in the south east of England.

Built in the early 18th century, it was subsequently enlarged in 1901, when the original brick building was encased and extended as a three-storey Jacobean style country house, roughcast with stone dressings.

The south-east wing of the house served as his living quarters, and the present-day bedrooms numbered 207-210 were Lord Croft's maisonette.

The house was sold as a training centre to the Westminster Bank in 1951, to the Chartered Building Societies Institute in 1971, and to J Sainsbury plc in February 1986.

For example, the local branch of the Ancient Order of Foresters holds meetings within the grounds,[3] and its buildings are also a location for political fundraising events within the town.