The Society of Antiquaries of Scotland is the senior antiquarian body of Scotland, with its headquarters in the National Museum of Scotland, Chambers Street, Edinburgh. The Society's aim is to promote the cultural heritage of Scotland.

Founded by David Steuart Erskine, 11th Earl of Buchan on 18 December 1780, John Stuart, 3rd Earl of Bute, the former prime minister, was elected the first President. It was incorporated by Royal Charter in 1783, on the same day as the Royal Society of Edinburgh, and initially both societies shared accommodation on George Street and in the Royal Institution building on The Mound. In 1891 the antiquaries moved into the purpose-built Scottish National Portrait Gallery and National Museum of Antiquities of Scotland, located on Queen Street.[1] The society moved to the National Museum of Scotland in 1954.

More information on the Wikipedia page [1]

The website is [2]