Lollardy (Lollardry, Lollardism) is a political and religious movement that exists from the mid-fourteenth century to the English Reformation.

It is initially led by John Wycliffe, a prominent theologian who is dismissed from the University of Oxford in 1381 for criticism of the Church, especially in his doctrine on the Eucharist.

The Lollards' demands are primarily for reform of Western Christianity.