Museums of History NSW (MHNSW) is a statutory body of the Government of New South Wales that is responsible for historic sites, state collections, and archives in the state of New South Wales, Australia. In 2023, the former State Archives and Records Authority was merged with Sydney Living Museums (formerly known as Historic Houses Trust of New South Wales) to form MHNSW. MHNSW headquarters are in The Mint, and sites run by the organisation include various houses, gardens, parklands, and urban spaces across New South Wales.
The Historic Houses Trust was established under the Historic Houses Trust Act 1980 and originally charged with the running of Elizabeth Bay House and Vaucluse House. The Trust expanded to care for 12 houses, gardens, and museums in New South Wales. the Trust was caring for over 48,000 catalogued objects across all of the sites.
In 2013, the Historic Houses Trust launched its new identity as Sydney Living Museums to refresh and unify its diverse range of properties and highlight its role and relevance for current and future generations.
In 2023, Sydney Living Museums merged with the State Archives and Records Authority to form Museums of History NSW.
Museums of History NSW currently manages the following properties: