Sir Daniel Fleming (1633–1701), was an English antiquarian and politician
Fleming was born on 25 July 1633, the eldest son of William Fleming of Coniston, North Lancashire, and Rydal, Westmoreland, by Alice, eldest daughter of Roger Kirkby of Kirkby, Lancashire. He was educated at The Queen's College, Oxford, which he entered in 1650, and Gray's Inn.
By the death of his father in 1653 Fleming inherited considerable estates in the neighbourhood of Rydal, for which he paid heavy fines to the parliament. At the Restoration he was appointed sheriff of Cumberland. He was a constant correspondent of Secretary Joseph Williamson: his letters, which went to the Public Record Office, afford a lively picture of the state of affairs in Cumberland and Westmorland during the latter half of the 17th century. They exhibit him as a staunch supporter of the Church of England, and enemy alike of the Protestant dissenter and the Roman Catholic. He regretted the release of George Fox in 1666 as likely to discourage the justices from acting against the Quakers, and gave credence to reports of their burning "steeple houses".
He was knighted on 15 May 1681 at Windsor, and in the parliament of 1685–1687 sat as member for Cockermouth; he opposed the Declaration of Indulgence. He occupied his leisure in antiquarian researches, chiefly in connection with his native county, and left some manuscript collections, which were edited for the Cumberland and Westmoreland Antiquarian Society under the title "Description of the County of Westmoreland". He died in 1701.