Scheduled monuments in Somerset

There are over 670 scheduled monuments in the ceremonial county of Somerset in South West England.

The area is administered by three unitary authorities. Two of them were established on 1 April 1996 following the breakup of the county of Avon; they are North Somerset and Bath and North East Somerset. These unitary authorities include areas that were once part of Somerset before the creation of Avon in 1974.

The rest of the county is administered by Somerset Council, which was established on 1 April 2023 to replace Somerset County Council and four districts – South Somerset, Mendip, Sedgemoor and Somerset West and Taunton. West Somerset and Taunton Deane previously existed until 1 April 2019 when they merged to form Somerset West and Taunton.

A scheduled monument is a nationally important archaeological site or monument which is given legal protection by being placed on a list (or "schedule") by the Secretary of State for Culture, Media and Sport; English Heritage takes the leading role in identifying such sites. The current legislation governing this is the Ancient Monuments and Archaeological Areas Act 1979. The term "monument" can apply to the whole range of archaeological sites, and they are not always visible above ground. Such sites have to have been deliberately constructed by human activity. They range from prehistoric standing stones and burial sites, through Roman remains and medieval structures such as castles and monasteries, to later structures such as industrial sites and buildings constructed for the World Wars or the Cold War.

For ease of reference, lists of scheduled monuments in the county are organised by unitary authority and then by former district area.