Sweet Hall Marsh

Sweet Hall Marsh (also known as Sweethall Marsh) is a 353 ha tidal marsh located on the northern edge of the Pamunkey River in southeastern King William County, Virginia, United States, just south-southeast of the unincorporated community of Sweet Hall. It is privately owned by the Tacoma Hunting and Fishing Club and is one of four components of the Chesapeake Bay National Estuarine Research Reserve.

Due to its low elevation (0 ft) and rising sea level, the marsh's fresh water ecosystem is in jeopardy.