A Ballad upon the Popish Plot is an early modern English broadside ballad about a fabricated conspiracy known as "The Popish Plot" that occurred between 1678 and 1681 in the Kingdoms of England and Scotland, during a period of widespread social and cultural prejudice against Catholicism. The song records an indictment of the Plot—a crucial consequence of national religious conflict that arguably began with the English Reformation—in the form of the ballad, one of the most time-honored and influential styles of popular music.