The Anti–Corn Law League was a successful political movement in Great Britain aimed at the abolition of the unpopular Corn Laws, which protected landowners’ interests by levying taxes on imported wheat, thus raising the price of bread at a time when factory-owners were trying to cut wages. The League was a middle-class nationwide organisation that held many well-attended rallies on the premise that a crusade was needed to convince parliament to repeal the corn laws. Its long-term goals included the removal of feudal privileges, which it denounced as impeding progress, lowering economic well-being, and restricting freedom. The League played little role in the final act in 1846, when Sir Robert Peel led the successful battle for repeal. However, its experience provided a model that was widely adopted in Britain and other democratic nations to demonstrate the organisation of a political pressure group with the popular base.

The Corn Laws were tariffs and other trade restrictions on imported food and corn enforced in the United Kingdom between 1815 and 1846. The word corn in British English denoted all cereal grains, including wheat, oats and barley. The laws were designed to keep corn prices high to favour domestic producers, and represented British mercantilism. The Corn Laws blocked the import of cheap corn, initially by simply forbidding importation below a set price, and later by imposing steep import duties, making it too expensive to import it from abroad, even when food supplies were short. The House of Commons passed the corn law bill on 10 March 1815, the House of Lords on 20 March and the bill received royal assent on 23 March 1815.