Helmingham Hall is a moated manor house in Helmingham, Suffolk, England. It was begun by John Tollemache in 1480 and has been owned by the Tollemache family ever since. The house is built around a courtyard in typical late medieval/Tudor style. The house is listed Grade I on the National Heritage List for England, and its park and formal gardens are also Grade I listed on the Register of Historic Parks and Gardens.
The present Helmingham Hall may have been initially constructed in 1510 on the site of an earlier house called Creke Hall. The exterior was altered between 1745–1760, again in 1800 by John Nash, and in 1840. The original half-timbered walls have been concealed by brick and tiles. The house is surrounded by a moat 60 feet wide, over which it is reached only by two working drawbridges, which have been pulled up every night since 1510. These were originally operated with a windlass but in recent years this has been replaced by an electric motor.
The house is not open to the public and Helmingham is best known for its fine garden, which is open on a regular basis. It is a semi-formal mixed garden with extensive borders, a rose garden, a knot garden, a parterre and an orchard. Beyond the garden there is a 400-acre (1.6 km2) park with herds of red and Fallow Deer. The Church of St Mary on the edge of the park has connections with the Tollemache family dating back to the Middle Ages.
In addition to the house and gardens, several other buildings and structures on the estate are listed Grade II. The garden wall to the south west of the hall, two urns and a male and female statue, a sundial and an obelisk, the tea rooms, bridge, game larder, and revetment are all listed Grade II.
The gate lodge to the north east of the hall and the left and right front lodges are also listed Grade II, as is the entrance gateway and piers between the front lodges.