Sir Archibald Edmonstone, 1st Baronet (10 October 1717 – 20 July 1807), also 11th of Duntreath, was a Scottish politician.
In 1780 he was chosen for Ayr Burghs but was again Member for Dumbartonshire in 1790, and continued to hold this office until he retired from Parliament in 1799.
A staunch Tory supporter, he upheld Lord North's government during the American War of Independence, and due to his public services, he was created a baronet on 20 May 1774.
[1] Edmonstone married firstly October 1753, Susanna Mary Harenc (d. 4 July 1776), daughter of Roger Harenc (d. 10 June 1763), a French gentleman from Paris who had settled in England around 1720, and wife Susanna Hays.
Edmonstone, having lived to be eighty nine, died in his house in Argyll Street in London in July 1807.