List of National Trust properties in Wales
Below is a list of the stately homes, historic houses, castles, abbeys, museums, estates, coastline and open country in the care of the National Trust in Wales, grouped into the unitary authority areas. Many areas of land owned by the trust, both open-access and closed to the public, are not listed here. This is a list of the more notable sites, generally defined as those having either an entry in the National Trust handbook, or a page on their website. There are many other areas of moorland and open country, agricultural holdings and coastline belonging to the National Trust, that are not listed here.
Anglesey
Carmarthenshire
Ceredigion
Conwy
Gwynedd
Monmouthshire
Neath Port Talbot
Newport
Pembrokeshire
Powys
| Site Name | Property type | Year acquired | Location | Image | Description |
| Abergwesyn Common | Open Country | Nr Llanwtyd Wells | Twelve mile wide expanse of remote mid-Wales, crossed by a few minor roads, and dotted with prehistoric and medieval sites. | ||
| Powis Castle & Garden | Castle and gardens | 1952 | Welshpool SY21 8RF | 13th century castle that evolved into the country seat of the Herbert family, surrounded by elaborate gardens in French and Italianate styles | |
| Brecon Beacons | NationalPark | 1936 | e.g. Pont ar Daf LD3 8NL | Mountain tracts such as those around Pen y Fan, Sugar Loaf and Ysgyryd Fawr, and glaciated valleys, and waterfalls such as Sgwd Henrhyd |