William Burn FRSE (20 December 1789 – 15 February 1870) was a Scottish architect.

In 1816, Burn entered a competition to complete Robert Adam's Old College.

In 1827, he was elected a Fellow of the Royal Society of Edinburgh, unusual for an architect, his proposer being James Skene.

Both served the Grand Lodge of Antient Free and Accepted Masons of Scotland, in that joint capacity, until 1849.

[5] Burn died in 1870, aged 80, at 6 Stratton Street in Piccadilly, London,[6] and is buried in Kensal Green Cemetery just on the edge of the path to the north-west of the Anglican Chapel.

He designed churches, castles, public buildings, country houses (as many as 600), monuments and other structures, mainly in Scotland, but also in England and Ireland.