The Stamp Act 1765 was a British parliamentary measure imposing direct taxation on the American colonies, enacted in the same parliamentary session as the Isle of Man Purchase Act and Mischief Act. The colonial resistance it provoked drew on similar arguments about parliamentary overreach and the rights of self-governing communities, and the parallels between the Manx and American situations were noted by contemporaries.

The two Acts share a regnal year, and the Manx records use it. The Revesting Act is cited throughout the Manx literature as the Act of 5 George III, and the Stamp Act belongs to the same session and the same minister: George Grenville carried both.

The Commons of that session had its own difficulty with Grenville's American resolutions. When he moved to amend a resolution so that troops kept up in America should be paid by America, Speaker Sir John Cust told the House he thought himself obliged in point of duty to say that he doubted whether the amendment could be received consistently with the rules, and cited the resolution of 18 February 1667 on motions for charges upon the people.

The repeal was fought as hard as the Act. Lord Strange moved on the rights of Parliament during the debate, and Dr Blackstone proposed adding to the repeal bill a clause for expunging the resolutions of the colonial assemblies and making that the condition of repeal. Neither carried. The tract afterwards written in defence of the Act and against its repeal has been ascribed to Charles Lloyd, Grenville's private secretary, and by others in part to Lord Temple.