Roger Tuckfield (c. 1685–1739), of Raddon Court, Devon, was a British landowner and Whig politician who sat in the House of Commons for 27 years between 1708 and 1739.
Like his uncle, he was noted as a Whig, and voted in favour of naturalizing the Palatines in 1709, and for the impeachment of Dr Sacheverell in 1710.
He regained his seat at the 1713 general election and voted on 18 March 1714 against the motion leading to the expulsion of Richard Steele.
[2] He was returned unopposed for Ashburton at the general election of 1715 as a Whig and voted for the repeal of the Occasional Conformity and Schism Acts in 1719.
He left Ashburton to his sister Margaret, the wife of John Harris, on whose death in 1754 it was inherited by her daughter, by her first husband, Margaret Rolle, 15th Baroness Clinton, the wife of Robert Walpole, 2nd Earl of Orford.