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This list contains the museums in Northamptonshire, England, defined as institutions (including nonprofit organizations, 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.
| Name | Image | Town/City | Type | Summary |
|---|---|---|---|---|
| 78 Derngate |  | Northampton | Historic house | Renovated house with interiors by architect Charles Rennie Mackintosh, contemporary craft gallery |
| Abington Park Museum | Northampton | Multiple | Local history, costumes, leather, Northamptonshire Regiment | |
| Althorp |  | Althorp | Historic house | Country estate with gardens and grounds, owned by Charles Spencer, 9th Earl Spencer, girlhood home of Diana, Princess of Wales |
| Boughton House |  | Kettering | Historic house | Estate home of the Duke of Buccleuch, with fine art, gardens |
| Burton Latimer Heritage Museum | Burton Latimer | Local | operated by the Burton Latimer Heritage Society | |
| The Canal Museum |  | Stoke Bruerne | Canal | History of canals in Britain |
| Canons Ashby House |  | Canons Ashby | Historic house | Operated by the National Trust, Elizabethan manor house |
| Carpetbagger Aviation Museum | Harrington | Aviation | History of RAF Harrington and the 801st Bombardment Group (Provisional) | |
| Corby Heritage Centre | Corby | Local | ||
| Cottesbrooke Hall |  | Creaton | Historic house | 18th-century Queen Anne-style house, gardens and park |
| Daventry Museum | Daventry | Local | ||
| Deene Park |  | Corby | Historic house | Medieval manor house with rooms from many periods, gardens |
| Desborough Heritage Centre | Desborough | Local | ||
| East Carlton Park Steel Heritage Centre | East Carlton | Local history | Features displays about local history and the development of the iron and steel industry in the town | |
| Irchester Narrow Gauge Railway Museum | Irchester | Railway | Steam and diesel locomotives, lifesize diorama of a quarry, industrial and railroad artefacts | |
| Jeyes of Earls Barton Museums | Earls Barton | Multiple | gift, teddy bear and doll house shop with coffee shop and several museums: Earls Barton Museum of Village Life, Jeyes Heritage & Pharmacy Museum, and a model funfair | |
| Kelmarsh Hall |  | Kelmarsh | Historic house | 18th-century manor house and gardens |
| Kettering Museum and Art Gallery | Kettering | Multiple | includes the Manor House Museum with exhibits of local history and culture, and the Alfred East Art Gallery for local art | |
| Kirby Hall |  | Northampton | Historic house | Operated by English Heritage, Elizabethan country house in a semi-ruined state with gardens |
| Lamport Hall |  | Lamport | Historic house | Tudor home and gardens; also includes Hannington Vintage Tractor Club and Museum with farm equipment |
| Long Buckby Museum | Long Buckby | Local | ||
| Museum of Leathercraft | Northampton | Fashion | located in the Grosvenor shopping centre, development of leathercraft | |
| Northampton Museum and Art Gallery | Northampton | Multiple | Shoe collection, art, decorative arts, local history | |
| Northamptonshire Ironstone Railway Trust | Hunsbury Hill | Railway | Heritage railway and museum | |
| Oundle Museum | Oundle | Local history | ||
| Piddington Villa Museum |  | Piddington | Archaeology | Artefacts and remains of a large Roman villa |
| Prebendal Manor House | Nassington | Historic house | ||
| Rockingham Castle |  | Corby | Historic house | Former royal castle and hunting lodge with gardens, grounds |
| Rothwell Arts and Heritage Centre | Rothwell | Multiple | local history, art | |
| Rushden Museum | Rushden | Local | local history especially the shoe industry | |
| Rushden Transport Museum | Rushden | Railway | Railway memorabilia, rolling stock, road transport vehicles | |
| Southwick Hall |  | Southwick | Historic house | medieval manor house, gardens, grounds |
| Sulgrave Manor |  | Sulgrave | Historic house | Ancestral home of the family of George Washington, reflects Tudor through Georgian eras |
| Sywell Aviation Museum |  | Sywell | Aviation | Former World War II aerodrome with artefacts, recovered airplane wreckage, local aviation history |
| Wellingborough Museum |  | Wellingborough | Local | local history, culture |
| Wollaston Museum | Wollaston | Local | information, local history, culture, industry | |