laws passed against Roman Catholics in Britain and Ireland after the Reformation that penalized the practice of the Roman Catholic religion and imposed civil disabilities on Catholics. Various acts passed in the 16th and 17th centuries prescribed fines and imprisonment for participation in Catholic worship and severe penalties, including death, for Catholic priests who practiced their ministry in Britain or Ireland. Other laws barred Catholics from voting, holding public office, owning land, bringing religious items from Rome into Britain, publishing or selling Catholic primers, or teaching.

Sporadically enforced in the 17th century and largely ignored in the 18th, the Penal Laws were almost completely nullified by the Roman Catholic Relief Act (1791), the Catholic Emancipation Act (1829), the Roman Catholic Charities Act (1832), and the Roman Catholic Relief Act (1926). See Catholic Emancipation.