The National Trust for Places of Historic Interest or Natural Beauty, usually known as the National Trust, is a conservation organisation in England, Wales and Northern Ireland. The Trust does not operate in Scotland, where there is an independent National Trust for Scotland.

According to its website:

The trust owns many heritage properties, including historic houses and gardens, industrial monuments and social history sites. It is one of the largest landowners in the United Kingdom, owning many beauty spots, most of which are open to the public free of charge. It is the largest membership organisation in the United Kingdom, and one of the largest UK charities by both income and assets.