Stonum, also called Stoneham, is a historic house at 900 Washington Avenue in New Castle, Delaware.

Its main section built about 1750, it was the country home of George Read (1733–1798), a signer of the Declaration of Independence.

The house once enjoyed an expansive view of the Delaware River, which is now obscured by mature plantings and intervening development.

[3] The house served as a tenant farm for George Read during the 1750s and 1760s; it is unclear if the main block was built during or prior to his period of ownership.

The location is now the site of the formal gardens attached to the George Read II House, built by his son.