Whitstable Museum and Gallery is a heritage centre in Whitstable, Kent, and is notable for its displays showing the history of the local oyster trade started by the Romans and of historical diving equipment. It is open on weekdays throughout the year, and on Sundays in summer. Admission is free, with access for the disabled. Previously in Whitstable there was a smuggling museum, an oyster museum and a railway museum, all now defunct.
The present museum was established in 1985. The museum received the Nautiek Award, for services to diving history, in 2001; the first time the award had been given to a UK establishment. The building is like the Tardis in that the tiny doorway opens up into a large hall of displays. In 1881 the Ancient Order of Foresters bought the building, and inscribed "Foresters' Hall" over the door.
The museum has collections and displays on themes of the natural world, local oyster trade, early diving and the actor Peter Cushing who lived locally, as well as displays on the 1953 floods, shipwrecks and maritime archaeology. The collections are held under the following headings: social history, science and technology, maritime, land transport, fine art, decorative and applied art, archives and archaeology.