William Tidd (1760–1847) was a legal writer and lawyer who practiced as a special pleader.
He was admitted to the society of the Inner Temple on 6 June 1782, and was called to the bar on 26 November 1813, after having practised as a special pleader for upwards of thirty years.
Tidd died on 14 February 1847 in Walcot Place, Lambeth, and was buried at Tillington in Sussex.
Tidd bequeathed the copyright of the "Practice" to Edward Hobson Vitruvius Lawes, serjeant-at-law.
Tidd mostly known for his "Practice of the Court of King's Bench" (London), the first part of which appeared in 1790 and the second in 1794.