National parks of the United Kingdom are areas of relatively undeveloped and scenic landscape across the country. Despite their name, they are quite different from national parks in many other countries, which are usually owned and managed by governments as protected community resources, and which do not usually include permanent human communities. In the United Kingdom, an area designated as a national park may include substantial settlements and human land uses that are often integral parts of the landscape. Land within national parks remains largely in private ownership. These parks are therefore not "national parks" according to the internationally accepted standard of the IUCN but they are areas of outstanding landscape where planning controls are a little more restrictive than elsewhere.

A national park is a natural park in use for conservation purposes, created and protected by national governments. Often it is a reserve of natural, semi-natural, or developed land that a government declares or owns. Although individual countries designate their own national parks differently, there is a common idea: the conservation of 'wild nature' for posterity and as a symbol of national pride. National parks are almost always open to visitors.