John Leveson-Gower, 1st Earl Gower, PC was an English Tory politician and peer who twice served as Lord Privy Seal from 1742 to 1743 and 1744 to 1754. Leveson-Gower also served in the Parliament of Great Britain, where he sat in the House of Lords as a leading member of the Tories, prior to switching his political affiliation and serving in various Whig-led government ministries until his death in 1754.

The Tories were a loosely organised political faction and later a political party, in the Parliaments of England, Scotland, Ireland, Great Britain and the United Kingdom. They first emerged during the 1679 Exclusion Crisis, when they opposed Whig efforts to exclude James, Duke of York from the succession on the grounds of his Catholicism. Despite their fervent opposition to state-sponsored Catholicism, Tories opposed his exclusion because of their belief that inheritance based on birth was the foundation of a stable society.