James Smith (c. 1645–1731) is a Scottish architect, who pioneers the Palladian style in Scotland.

He is described by Colen Campbell, in his Vitruvius Britannicus (1715–1725), as "the most experienced architect of that kingdom".

(Campbell, Colen (1715-1725).

Vitruvius Britannicus.

ii, 3, quoted in Gifford, p.62)