William Peryn (died 1558) was an English Roman Catholic priest and Dominican friar who in the reign of Mary I became prior of the short-lived Priory of St Bartholomew's, Smithfield, London.
Soon after Henry VIII’s Royal Act of Supremacy, 1534, he went into exile, but in 1543returned to England, when he applied for the degree of Bachelor of Theology at Oxford.
[1] Peryn was the author of three books: Thre Godly Sermons of the Sacrament of the Aulter (1546); Spirituall exercyses and goostly meditacions, and a neare waye to come to perfection and lyfe contemplatyve (1557); and De frequenter celebranda missa (of which no copy survives).
Peryn borrowed heavily from Bishop of Rochester John Fisher's De veritate corporis et sanguinis Christi in eucharistia, and in a preface he explains why he has published the sermons: ... in homely and playne sentens, by cause that I have cheflye prepared them ... for the unlearned.
Also the matters of our fayth, hath moche lesse nede of rethoricall perswacyons, havynge theyr grond, and fundacyon, upon the infallyble veritie, of goddes holy worde.