Sir Harold Paton Mitchell, 1st Baronet, JP, DL (21 May 1900 – 8 April 1983) was a British businessman and Conservative politician.
He was born in Carnock, Fife, as the eldest son of Alexander Mitchell (1871–1934) and Meta Mary Graham Paton.
He was created a baronet, of Tulliallan in the County of Fife and of Luscar in the Province of Alberta in the Dominion of Canada, in September 1945,[1] in recognition of his "political and public services".
He left the United Kingdom after his mines and a railway he owned were nationalised after the Second World War (circa 1947), and he subsequently refused to keep any of his money there.
Mitchell purchased Tulliallan Castle in 1923 from the estate of Sir James Sivewright, and he sold it to the Scottish Home Department in 1950 for £9,100.
He also had a number of estates in Bermuda (his main residency during his later years), Jamaica, Honduras, Portugal, Fiji, Brazil and Guatemala.