# List of museums in Wales

This list of museums in Wales contains museums which are defined for this context as institutions (including nonprofit organisations, government entities, and private businesses) that collect and care for objects of cultural, artistic, scientific, or historical interest and make their collections or related exhibits available for public viewing. Also included are non-profit art galleries and university art galleries.
Museums that exist only in cyberspace (i.e. virtual museums) are not included. Those marked 'NMW' are part of the network of National Museum Wales.
To use the sortable table, click on the icons at the top of each column to sort that column in alphabetical order; click again for reverse alphabetical order.
| Name | Town/City | Principal area | Region | Type | Summary |
| Beaumaris Castle | Beaumaris | Anglesey | North Wales | Historic house | Medieval castle |
| Beaumaris Courthouse | Beaumaris | Anglesey | North Wales | Law enforcement | website, also known as Llys Biwmares Beaumaris Court, dates to 1614 |
| Beaumaris Gaol | Beaumaris | Anglesey | North Wales | Prison | 19th-century prison |
| Canolfan Ucheldre Centre | Holyhead | Anglesey | North Wales | Art | website, community arts centre with exhibit gallery for contemporary art and craft |
| Copper Kingdom Centre | Amlwch | Anglesey | North Wales | Local | website, local history, copper and shipbuilding industry |
| Haulfre Stables | Beaumaris | Anglesey | North Wales | Transport | Open by appointment only, Victorian harness and saddlery, carts and carriages |
| Holyhead Maritime Museum | Holyhead | Anglesey | North Wales | Maritime | Located in an 1858 lifeboat station, maritime and social history |
| Llynnon Mill | Holyhead | Anglesey | North Wales | Mill | 18th-century windmill |
| Menai Heritage Bridges Exhibition | Menai Bridge | Anglesey | North Wales | Technology | website, history and construction of the Menai Suspension Bridge and the Britannia Bridge |
| Moelfre Seawatch Centre | Moelfre | Anglesey | North Wales | Maritime | Also known as RNLI Gwylfan Seawatch Centre, includes a lifeboat, maritime artifacts, marine life and environment |
| Oriel Ynys Môn | Llangefni | Anglesey | North Wales | Multiple | Art, culture, social history of Anglesey |
| Penmaenmawr Museum | Penmaenmawr | Conwy | North Wales | Local | website, local history museum and community archive for Penmaenmawr |
| Plas Newydd | Llanfairpwllgwyngyll | Anglesey | North Wales | Historic house | Operated by the National Trust, 18th-century house with 1930s interior, military museum of the 1st Marquess of Anglesey, garden, arboretum |
| South Stack Lighthouse | Holy Island | Anglesey | North Wales | Maritime | Historic lighthouse, engine room and exhibits |
| Stone Science | Pentraeth | Anglesey | North Wales | Natural history | Dinosaurs, fossils, rocks, minerals |
| Swtan Heritage Museum | Rhydwyn | Anglesey | North Wales | Historic house | website, 16th-century Welsh cottage with a thatched roof, early 20th-century interior, exhibits of art and rural life |
| Tacla Taid | Rhydwyn | Anglesey | North Wales | Transport | website, also known as Anglesey Transport and Agriculture Museum, cars, motorbikes, commercial and farm vehicles and static engines |
| Abertillery & District Museum | Abertillery | Blaenau Gwent | South Wales | Multiple | website, local history, period room and farm displays, mining, culture, Roman artifacts |
| Bedwellty House | Tredegar | Blaenau Gwent | South Wales | Historic house | Early 19th-century ironmaster's residence and gardens |
| Blaina Heritage Action Group Museum | Tredegar | Blaenau Gwent | South Wales | Local | website, local history |
| Brynmawr & District Museum | Brynmawr | Blaenau Gwent | South Wales | Local | website, local history, Brynmawr Furniture pieces made during the Brynmawr Experiment |
| Tredegar Local History Museum | Tredegar | Blaenau Gwent | South Wales | Local | Located in the town library, local history, industry |
| Cefn Junction Signal Box | Cefn Cribwr | Bridgend County Borough | South Wales | Local | website, located in a 1898 signal box, local history with an emphasis on rail and coal mining heritage, |
| Porthcawl Museum | Porthcawl | Bridgend County Borough | South Wales | Local | website, local history |
| St John's House | Bridgend | Bridgend County Borough | South Wales | Local | website, local history |
| Caerphilly Castle | Caerphilly | Caerphilly | South Wales | Historic house | Medieval castle, replica siege engines, exhibits on other castles in Wales |
| Llancaiach Fawr | Nelson | Caerphilly | South Wales | Living | 1645 period home, at the height of the English Civil War when King Charles I of England visited the house to persuade its owner not to change his allegiance |
| Winding House | New Tredegar | Caerphilly | South Wales | Local | website, local history, coal mining, winding engine |
| Butetown History and Arts Centre | Butetown | Cardiff | South Wales | Multiple | Local history, culture, art |
| Cardiff Bay Visitor Centre | Cardiff | Cardiff | South Wales | Local | Includes exhibits of local history, culture, located in the Wales Millennium Centre |
| Cardiff Castle | Cardiff | Cardiff | South Wales | Historic house | Medieval castle and Victorian architecture Gothic revival mansion |
| Cardiff Story | Cardiff | Cardiff | South Wales | Local | City's history, culture |
| Castell Coch | Tongwynlais | Cardiff | South Wales | Historic house | Operated by Cadw, late 19th-century "fairy-tale" Victorian Gothic castle with lavish furnishings |
| Chapter Arts Centre | Canton | Cardiff | South Wales | Art | Arts centre for international art, performance and film |
| Craft in the Bay | Cardiff | Cardiff | South Wales | Art | Contemporary crafts gallery of the Makers Guild in Wales |
| Doctor Who Exhibition Centre | Cardiff | Cardiff | South Wales | Media | Artifacts from the Doctor Who television series |
| Firing Line: Cardiff Castle Museum of the Welsh Soldier | Cardiff | Cardiff | South Wales | Military | Located at Cardiff Castle, history of the Welch Regiment |
| The Gate | Roath | Cardiff | South Wales | Art | Arts centre with exhibit gallery |
| Insole Court | Llandaff | Cardiff | South Wales | Historic house | Victorian mansion |
| National Museum Cardiff | Cardiff | Cardiff | South Wales | Multiple | (NMW) Art, archaeology, natural history, dinosaurs, geology, decorative arts |
| Norwegian Church Arts Centre | Cardiff | Cardiff | South Wales | Art | Arts centre with gallery |
| Pierhead | Cardiff | Cardiff | South Wales | History | Late 19th-century building with Welsh history exhibits |
| St Fagans National History Museum | St Fagans | Cardiff | South Wales | Open air | (NMW) Over forty buildings including a Celtic village, Elizabethan manor house, chapel, medieval church, schoolhouse, tollbooth, farm, |
| Techniquest | Cardiff | Cardiff | South Wales | Science | Hands-on science exhibits |
| Third Floor Gallery | Cardiff | Cardiff | South Wales | Photography | Photography gallery of national and international contemporary photography |
| Wales Millennium Centre | Cardiff | Cardiff | South Wales | Art | Performing arts centre with exhibit gallery |
| Bro Aman Heritage Room | Ammanford | Carmarthenshire | South Wales | Local history | Located in the Ammanford Town Library |
| Carmarthenshire County Museum | Carmarthen | Carmarthenshire | South Wales | Multiple | Local history, culture, art gallery, furniture, decorative arts, 19th-century schoolroom, the inside of a Carmarthenshire farmhouse a clogmaker's workshop |
| Dolaucothi Gold Mines | Pumsaint | Carmarthenshire | South Wales | Mining | Operated by the National Trust, Roman surface and deep gold mines |
| Dylan Thomas Boathouse | Laugharne | Carmarthenshire | South Wales | Historic house | Final home of poet Dylan Thomas |
| Kidwelly Industrial Museum | Kidwelly | Carmarthenshire | South Wales | Industry | Tinplate industry buildings and equipment |
| Museum of Speed | Pendine | Carmarthenshire | South Wales | Automotive | Use of Pendine Sands for land speed record attempts |
| National Coracle Centre | Cenarth | Carmarthenshire | South Wales | Maritime | Collection of coracles |
| National Wool Museum | Llandysul | Carmarthenshire | South Wales | Industry | (NMW) Woolen mill, textiles gallery |
| Newton House | Llandeilo | Carmarthenshire | South Wales | Historic house | Operated by the National Trust, 1912 period house in extensive park, nearby Dinefwr Castle ruins |
| Oriel Myrddin Gallery | Carmarthen | Carmarthenshire | South Wales | Art | website, contemporary art gallery |
| Parc Howard Museum | Llanelli | Carmarthenshire | South Wales | Multiple | Local pottery, art, decorative arts, local history |
| West Wales Museum of Childhood | Llangeler | Carmarthenshire | South Wales | Toy | Toys, dolls, model trains, model cars, teddy bears, toy soldiers, tin toys, costumes, pinball machines, games, period schoolroom, household items |
| Aberystwyth Arts Centre | Aberystwyth | Ceredigion | Mid Wales | Art | Part of Aberystwyth University, features exhibit galleries for art, ceramics |
| Ceredigion Museum | Aberystwyth | Ceredigion | Mid Wales | Local | Local history, archaeology, natural history, Welsh furniture, costumes, farming and agriculture items |
| Internal Fire – Museum of Power | Tanygroes | Ceredigion | Mid Wales | Technology | Internal combustion and steam engines |
| Lampeter Museum | Lampeter | Ceredigion | Mid Wales | Local | Local history exhibits in the town library |
| Llanerchaeron | Ciliau Aeron | Ceredigion | Mid Wales | Historic house | Operated by the National Trust, 18th-century Welsh minor gentry estate with dairy, laundry, brewery, salting house, walled kitchen gardens, organic farm |
| Llanon Cottage | Llanon | Ceredigion | Mid Wales | Historic house | website, Tudor cottage with original straw rope underthatch |
| Llywernog Silver-Lead Mine | Ponterwyd | Ceredigion | Mid Wales | Mining | website, 18th-century silver mine, buildings, equipment, tramways |
| New Quay Heritage Centre | New Quay | Ceredigion | Mid Wales | Local | website, local history exhibits |
| School of Art Gallery and Museum at Aberystwyth University | Aberystwyth | Ceredigion | Mid Wales | Art | website, fine art, photography, prints and drawings, crafts and decorative art |
| Strata Florida Abbey | Pontrhydfendigaid | Ceredigion | Mid Wales | Archaeology | Remains of a medieval Cistercian abbey |
| Tregaron Kite Centre and Museum | Tregaron | Ceredigion | Mid Wales | Natural history | website, kites and other area birds, Tregaron Bog, local history, Victorian schoolroom |
| Welsh Quilt Centre | Lampeter | Ceredigion | Mid Wales | Art | website, quilts and textile exhibits |
| Aberconwy House | Conwy | Conwy | North Wales | Historic house | website, operated by the National Trust, medieval merchant's house with rooms from different periods |
| Conwy Castle | Conwy | Conwy | North Wales | Historic house | Medieval castle |
| Conwy Mussel Museum | Conwy | Conwy | North Wales | Maritime | website, pearl fishing |
| Conwy Suspension Bridge | Conwy | Conwy | North Wales | Technology | Operated by the National Trust, 1826 version of the Menai Suspension Bridge, now a footbridge, 1890s period toll house |
| Conwy Valley Railway Museum | Betws-y-Coed | Conwy | North Wales | Railway | Railway equipment, miniature and model railways, memorabilia |
| Home Front Experience | Llandudno | Conwy | North Wales | Living | website, life in Britain during World War II |
| Llandudno Museum | Llandudno | Conwy | North Wales | Local | website, local history, culture, copper mining, Welsh kitchen, art |
| Mostyn | Llandudno | Conwy | North Wales | Art | Contemporary art gallery |
| New York Cottages | Penmaenmawr | Conwy | North Wales | Historic house | website, 1840s house for local quarry workers, local history, industry |
| Plas Mawr | Conwy | Conwy | North Wales | Historic house | 16th-century Elizabethan town house |
| Royal Cambrian Academy of Art | Conwy | Conwy | North Wales | Art | Hosts 8-10 exhibits a year |
| Sir Henry Jones Museum | Llangernyw | Conwy | North Wales | Historic house | website, Victorian childhood home of philosopher and academic Sir Henry Jones |
| Smallest House in Great Britain | Conwy | Conwy | North Wales | Historic house | 16th-century house measuring 3.05 metre by 1.8 metre (10 feet by 6 feet) |
| Tŷ Mawr Wybrnant | Penmachno | Conwy | North Wales | Historic house | Operated by the National Trust, 16th-century stone-built upland farmhouse, birthplace of Bishop William Morgan, the first translator of the Bible into Welsh, collection of bibles |
| Bodelwyddan Castle | Bodelwyddan | Denbighshire | North Wales | Multiple | Historic house with Victorian period rooms, art exhibits from the National Portrait Gallery, gardens, parkland |
| Llangollen Motor Museum | Llangollen | Denbighshire | North Wales | Automobile | Cars, motorcycles, memorabilia and artifacts |
| Llangollen Museum | Llangollen | Denbighshire | North Wales | Local | website, local history, culture |
| Nantclwyd y Dre | Ruthin | Denbighshire | North Wales | Historic house | 15th-century timbered house with rooms from different periods up to the 1940s |
| Plas Newydd | Llangollen | Denbighshire | North Wales | Historic house | Late 18th-century Gothic cottage house |
| Rhyl Miniature Railway | Rhyl | Denbighshire | North Wales | Railway | Miniature railway and museum |
| Rhyl Museum | Rhyl | Denbighshire | North Wales | Local | website, local history, culture |
| Ruthin Gaol | Ruthin | Denbighshire | North Wales | Prison | 19th-century Victorian prison dating back to the 17th century |
| Ruthin Craft Centre | Ruthin | Denbighshire | North Wales | Art | Contemporary crafts centre with exhibit galleries, artist studios, retail gallery, education and residency workshops |
| Wireless in Wales Museum | Denbigh | Denbighshire | North Wales | Wireless radio | website, collection of radios and information, displaying some very early and rare sets dating from the 1920s to the 1960s |
| Greenfield Valley Heritage Park | Holywell | Flintshire | North Wales | Industry | Open air park with a farm museum, former factories for making cotton, brass items, copper sheets, wire |
| Mold Library, Museum and Gallery | Mold | Flintshire | North Wales | Local | website, local history, author Daniel Owen |
| St Winefride's Well | Holywell | Flintshire | North Wales | Religious | Shrine with museum about its history |
| Bocs | Caernarfon | Gwynedd | North Wales | Art | website, Creative Industries Centre for young artists, art gallery |
| Cae'r Gors | Rhosgadfan | Gwynedd | North Wales | Literature | website, restored birthplace of author Kate Roberts |
| Caernarfon Airworld Museum | Caernarfon | Gwynedd | North Wales | Aviation | website, collection of retired aircraft, history of mountain rescue, located at Caernarfon Airport, the airfield of the former RAF Llandwrog |
| Caernarfon Castle | Caernarfon | Gwynedd | North Wales | Historic house | Medieval fortress castle, site of investiture of the Prince of Wales, houses the Royal Welch Fusiliers Museum |
| Lasynys Fawr | Harlech | Gwynedd | North Wales | Historical house | website, restored 15th-century home of poet Ellis Wynne |
| Llechwedd Slate Caverns | Blaenau Ffestiniog | Gwynedd | North Wales | Mining | Slate mine quarry and tram |
| Lloyd George Museum | Llanystumdwy | Gwynedd | North Wales | Historic house | Late 19th-century boyhood home of British Prime Minister David Lloyd George |
| Narrow Gauge Railway Museum | Tywyn | Gwynedd | North Wales | Railway | Locomotives and artifacts from over 80 British narrow gauge railways |
| National Slate Museum | Llanberis | Gwynedd | North Wales | Industry | (NMW) Formerly the Welsh Slate Museum, former slate quarry |
| Oriel Pendeitsh | Caernarfon | Gwynedd | North Wales | Art | website, exhibition space |
| Oriel Plas Glyn-y-Weddw | Pwllheli | Gwynedd | North Wales | Art | website, art gallery |
| Penrhyn Castle | Llandygai | Gwynedd | North Wales | Historic house | 19th-century fantasy castle, operated by the National Trust |
| Penrhyn Castle Railway Museum | Llandygai | Gwynedd | North Wales | Railway | Industrial railway locomotives |
| Porthmadog Maritime Museum | Porthmadog | Gwynedd | North Wales | Maritime | website, schooners built in the town and the men who sailed in them |
| Quaker Heritage Centre | Dolgellau | Gwynedd | North Wales | Religious | History of the local Quaker community that later emigrated to Pennsylvania |
| Royal Welch Fusiliers Museum | Caernarfon | Gwynedd | North Wales | Military | Located at Caernarfon Castle, regimental uniforms, weapons, memorabilia |
| Segontium | Caernarfon | Gwynedd | North Wales | Archaeology | Excavated Roman fort and visitor center with artifacts |
| Sygun Copper Mine | Beddgelert | Gwynedd | North Wales | Mining | Underground tours of the Victorian copper mine |
| Storiel | Bangor | Gwynedd | North Wales | Multiple | website, local history, art, culture, Welsh furniture, costumes, archaeology, formerly the Gwynedd Museum and Art Gallery |
| Tŷ Siamas | Dolgellau | Gwynedd | North Wales | Music | National centre for Welsh folk music |
| Cyfarthfa Castle | Merthyr Tydfil | Merthyr Tydfil | South Wales | Multiple | Local and social history, art, decorative arts |
| Joseph Parry's Cottage | Merthyr Tydfil | Merthyr Tydfil | South Wales | Historic house | website, 1840s period ironworker's cottage, birthplace of composer Joseph Parry |
| Abergavenny Museum | Abergavenny | Monmouthshire | South Wales | Local | Local history, culture, period saddlers shop, Victorian farmhouse kitchen, 1930s grocery shop, changing exhibits of art, history, culture |
| Caldicot Castle | Caldicot | Monmouthshire | South Wales | Historic house | Medieval castle with Victorian furnishings, local history artifacts |
| Chepstow Museum | Chepstow | Monmouthshire | South Wales | Local | Local history |
| Monmouth Museum | Monmouth | Monmouthshire | South Wales | Biographical | Includes the former Nelson Museum about Admiral Horatio Nelson, local history, |
| Monmouth Regimental Museum | Monmouth | Monmouthshire | South Wales | Military | History of the Royal Monmouthshire Royal Engineers |
| Priory Church of St Mary | Abergavenny | Monmouthshire | South Wales | Religious | Exhibits in the tithe barn about the priory, 24 foot tapestry of town history |
| Usk Rural Life Museum | Usk | Monmouthshire | South Wales | Agriculture | website, farm tools, equipment, scale model horse-drawn vehicles, corn dollies, period household and trade displays |
| Cefn Coed Colliery Museum | Crynant | Neath Port Talbot | South Wales | Mining | Former coal mine with buildings, equipment, tram |
| Margam Stones Museum | Margam | Neath Port Talbot | South Wales | Religious | Operated by Cadw, inscribed pre- Romanesque, Roman and Celtic stones and crosses |
| South Wales Miners' Museum | Cymmer | Neath Port Talbot | South Wales | Mining | Former coal mine with buildings, equipment, miner's cottage, stable, blacksmith |
| Welsh Museum of Fire | Skewen | Neath Port Talbot | South Wales | Firefighting | website, fire engines, equipment, memorabilia, open by appointment |
| Fourteen Locks Canal and Heritage Centre | Newport | Newport | South Wales | Transport | Heritage of the Monmouthshire and Brecon Canal |
| National Roman Legion Museum | Caerleon | Newport | South Wales | Archaeology | (NMW) Artifacts and excavations from the Roman legion fortress and settlement and other Roman sites in Wales |
| Isca Augusta amphitheatre, barracks, fortress walls and Caerleon Roman Fortress and Baths | Caerleon | Newport | South Wales | Archaeology | Artifacts and excavations from the Roman legion fortress and settlement, operated by Cadw |
| Newport Museum and Art Gallery | Newport | Newport | South Wales | Multiple | Local history, art gallery, local Roman history and archaeology, natural history, social history, industry |
| Newport Ship | Newport | Newport | South Wales | Maritime | 15th-century sailing vessel undergoing restoration, viewed on open days |
| Newport Transporter Bridge Visitor Centre | Newport | Newport | South Wales | Transport | History and construction of the bridge and other transporter bridges |
| Riverfront Arts Centre | Newport | Newport | South Wales | Art | Arts centre with gallery |
| Tredegar House | Newport | Newport | South Wales | Historic house | 17th-century Charles II country house mansion, operated by the National Trust |
| Carew Castle | Carew | Pembrokeshire | South Wales | Multiple | Medieval castle remains and 19th-century tidal grinding mill |
| Carew Cheriton Control Tower | Carew | Pembrokeshire | South Wales | Military | History of RAF Carew Cheriton including the World War II RAF control tower (Watch Office), Avro Anson aircraft and air raid shelter |
| Castell Henllys | Crymych | Pembrokeshire | South Wales | Open air | Reconstructed Iron Age fort |
| Fleets to Flying Boat Centre | Pembroke Dock | Pembrokeshire | South Wales | Multiple | website, Sunderland flying boats, area WWII history |
| Haverfordwest Town Museum | Haverfordwest | Pembrokeshire | South Wales | Local | Local history, industry, artifacts from Haverfordwest Castle |
| Milford Haven Museum | Milford Haven | Pembrokeshire | South Wales | Local | Local history, maritime history, industries, railroads |
| Narberth Museum | Narberth | Pembrokeshire | South Wales | Local | website, local history, culture |
| Oriel y Parc | St Davids | Pembrokeshire | South Wales | Art | website, art gallery, focus is the landscapes of Pembrokeshire, houses the visitor centre for the Pembrokeshire Coast National Park |
| Pembrock Dock Heritage Centre | Pembroke Dock | Pembrokeshire | South Wales | Multiple | website, located in a Martello tower, local history, military and maritime history |
| Pembrokeshire Motor Museum | Simpson Cross | Pembrokeshire | South Wales | Automobile | Vintage cars, currently closed |
| Penrhos Cottage | Maenclochog | Pembrokeshire | South Wales | Historic house | Open by appointment, tiny early 19th-century cottage |
| Picton Castle | Haverfordwest | Pembrokeshire | South Wales | Historic house | Medieval castle, art gallery, gardens |
| Scolton Manor | Haverfordwest | Pembrokeshire | South Wales | Multiple | Victorian manor house with period rooms, exhibits on local history, agriculture, rural life, railways, industry, science |
| Techniquest | Narberth | Pembrokeshire | South Wales | Science | |
| Tenby Museum and Art Gallery | Tenby | Pembrokeshire | South Wales | Multiple | Local history, art, natural history, geology, archaeology, maritime heritage |
| Tudor Merchant's House | Tenby | Pembrokeshire | South Wales | Historic house | Operated by the National Trust, late 15th-century Tudor period house |
| Abbey-Cwm-Hir Hall | Nr. Llandrindod Wells | Powys | Mid Wales | Historic house | 19th-century neo-Elizabethan country house, gardens |
| Andrew Logan Museum of Sculpture | Berriew | Powys | Mid Wales | Art | website, works by Andrew Logan |
| Brecon Cathedral Heritage Centre | Brecon | Powys | Mid Wales | Religious | Located in a 17th-century tithe barn, history of the cathedral |
| Centre for Alternative Technology | Machynlleth | Powys | Mid Wales | Science | Exhibits about alternative technologies, sustainable living, the environment |
| Howell Harris Museum | Aberhonddu | Powys | Mid Wales | Religious | Life of 18th-century Methodist leader Howell Harris, known as Trefeca |
| Judge's Lodging Museum | Presteigne | Powys | Mid Wales | Historic house | website, 1870s period house with restored judge's apartments, servants’ quarters and courtroom |
| Llanidloes Museum | Llanidloes | Powys | Mid Wales | Local | website, local history, industry, Victorian period rooms, natural history |
| Mid Wales Arts Centre | Caersws | Powys | Mid Wales | Art | website, includes collection of works by Stefan Knapp |
| Minerva Arts Centre | Llanidloes | Powys | Mid Wales | Art | website, exhibits of quilts and textiles by the Quilt Association |
| MOMA, Wales | Machynlleth | Powys | Mid Wales | Art | Contemporary art exhibits |
| National Cycle Museum | Llandrindod Wells | Powys | Mid Wales | Transport | Features over 260 bicycles |
| Newtown Textile Museum | Newtown | Powys | Mid Wales | Industry | website, typical early 19th-century hand weaving shop, open on special occasions |
| The Old Bell Museum | Montgomery | Powys | Mid Wales | Local history | Housed in a 16th-century inn |
| Oriel Davies Gallery | Newtown | Powys | Mid Wales | Art | website, contemporary art and craft |
| Owain Glyndwr Centre | Machynlleth | Powys | Mid Wales | Biographical | History of Owain Glyndŵr, 14th-century Welsh ruler and the last native Welsh person to hold the title Prince of Wales |
| Powis Castle | Welshpool | Powys | Mid Wales | Historic house | Operated by the National Trust, castle with paintings, sculpture, furniture, tapestries, museum of 18th-century artifacts from India, gardens |
| Powysland Museum | Welshpool | Powys | Mid Wales | Local | website, local history, culture, farming, archaeology, military |
| Radnorshire Museum | Llandrindod Wells | Powys | Mid Wales | Local | website, local history, archaeology, natural history including fossils, social history of the former county of Radnorshire |
| Rhayader Museum & Gallery | Rhayader | Powys | Mid Wales | Local | website |
| Robert Owen Museum | Newtown | Powys | Mid Wales | Biographical | website, social reformer Robert Owen |
| Regimental Museum of The Royal Welsh | Brecon | Powys | Mid Wales | Military | Uniforms, weapons, medal and artifacts of the South Wales Borderers (24th Foot) and the Welch Regiment (41st/69th Foot) |
| Thomas Shop Museum | Penybont | Powys | Mid Wales | History | website, 1805 period general store |
| Tretower Court | Crickhowell | Powys | Mid Wales | Historic house | Medieval unfurnished fortified manor house |
| W H Smith Museum | Newtown | Powys | Mid Wales | History | Original location of the W H Smith chain of booksellers, period shop |
| Nantgarw Chinaworks Museum | Nantgarw | Rhondda Cynon Taf | South Wales | Industry | History of Nantgarw Pottery |
| Rhondda Heritage Park | Trehafod | Rhondda Cynon Taf | South Wales | Mining | Former coal mine |
| 1940s Swansea Bay | Swansea | Swansea | South Wales | Military | website, military and civilian homefront life in Swansea during World War II |
| Dylan Thomas Centre | Swansea | Swansea | South Wales | Biographical | Exhibits on author Dylan Thomas |
| Egypt Centre Museum of Egyptian Antiquities | Swansea | Swansea | South Wales | Archaeology | Part of Swansea University, Ancient Egyptian artifacts |
| Gower Heritage Centre | Parkmill | Swansea | South Wales | Open air | Includes 12th-century water powered corn and saw mill, restored woolen mill, outdoor exhibits of antique farming and cultivation, blacksmith, potter, farm |
| Glynn Vivian Art Gallery | Swansea | Swansea | South Wales | Art | Includes work by Old Masters, contemporary art, porcelain, Swansea china |
| Mission Gallery | Swansea | Swansea | South Wales | Art | Exhibitions of visual arts, applied arts and craft |
| National Waterfront Museum | Swansea | Swansea | South Wales | Multiple | (NMW) Welsh industrial and maritime heritage, social history, technology, science |
| Swansea Museum | Swansea | Swansea | South Wales | Multiple | Three main locations with exhibits on city history and culture, boats and maritime artifacts, street trams and memorabilia |
| Taliesin Arts Centre | Swansea | Swansea | South Wales | Art | Part of Swansea University, includes Oriel Ceri Richards Gallery |
| Big Pit National Coal Museum | Blaenafon | Torfaen | South Wales | Industry | (NMW), former coal mine, underground tour, equipment, buildings |
| Blaenavon Ironworks | Blaenafon | Torfaen | South Wales | Industry | Former iron works, remains of five early blast furnaces, restored late 18th-century workers' housing at Stack Square |
| Llantarnam Grange Arts Centre | Cwmbran | Torfaen | South Wales | Art | Exhibitions of applied and visual art |
| Pontypool Museum | Pontypool | Torfaen | South Wales | Local | Local history, art, domestic life, culture, Japanware and decorative arts |
| Art Central | Barry | Vale of Glamorgan | South Wales | Art | website, community art gallery in the old town hall |
| Cosmeston Medieval Village | Lavernock | Vale of Glamorgan | South Wales | Living | Recreated 14th-century peasant village |
| Cowbridge Museum | Cowbridge | Vale of Glamorgan | South Wales | Prison | information, located in Cowbridge Town Hall, early 19th-century prison, town hall and museum of local history |
| Fonmon Castle | Rhoose | Vale of Glamorgan | South Wales | Historic house | Medieval castle home and gardens |
| Nash Point Lighthouse | Nash Point | Vale of Glamorgan | South Wales | Maritime | Lighthouse tours |
| Oriel Washington Gallery | Penarth | Vale of Glamorgan | South Wales | Art | website, contemporary art gallery |
| Penarth Pier Pavilion | Penarth | Vale of Glamorgan | South Wales | Art | Hosts exhibits of art, photography and crafts |
| Turner House Gallery | Penarth | Vale of Glamorgan | South Wales | Art | Exhibition space for Ffotogallery, the national photography development agency for Wales, exhibits of photography, video, digital media |
| Bersham Colliery Mining Museum | Rhostyllen | Wrexham | North Wales | Industry | website, former coalfield with headgear, equipment, miner family life |
| Chirk Castle | Bersham | Wrexham | North Wales | Historic house | Operated by the National Trust, medieval fortress with state rooms, towers and dungeons, gardens |
| Erddig | Wrexham | Wrexham | North Wales | Historic house | Operated by the National Trust, early 18th-century country house reflecting the upstairs downstairs life of a gentry family over 250 years, outbuildings, garden, landscape park |
| Minera Lead Mines | Minera | Wrexham | North Wales | Industry | Former lead mine, equipment, miner family life |
| Nant Mill Visitor Centre | Wrexham | Wrexham | North Wales | Natural history | Located in a former corn mill in Nant Mill Country Park |
| Tŷ Pawb | Wrexham | Wrexham | North Wales | Art | website, formerly the Wrexham Arts Centre and Oriel Wrecsam |
| Xplore! | Wrexham | Wrexham | North Wales | Science | website, hands-on science exhibits, run by North Wales Science (formerly operated Techniquest Glyndŵr) |
| Wrexham County Borough Museum | Wrexham | Wrexham | North Wales | Local | website, local history, culture |
| The Wrexham Miners Project | Wrexham | Wrexham | North Wales | Local | website, mining history |
| Y Gaer | Brecon | Powys | Mid Wales | Multiple | Local history, culture, archaeology, rural life, art gallery |

## Defunct museums

* Bersham Heritage Centre
* Cae Dai 50s Museum, Denbigh, website, destroyed by fire in 2009
* Celtica, Machynlleth, Powys
* Griffithstown Railway Museum, Pontypool, closed by owner in 2011
* Llanrwst Almshouse Museum, Llanrwst, closed in 2011
* Museum of Childhood Memories, Beaumaris
* Baked Bean Museum of Excellence, Port Talbot, closed by owner in 2023