William Thynne (died 10 August 1546) was an English courtier and editor of Geoffrey Chaucer's works.
On 21 July 1529 he was appointed customer of wools, hides, and fleeces in the port of London, and on 8 October 1529 receiver-general of the earldom of March and keeper of Gateley Park, Wigmoresland.
In 1531 Thynne obtained from the prior and convent of Christchurch, near Aldgate in London, a lease of the rectorial tithe of Erith in Kent, and in a house there he passed much of his life.
[1] A poem The Pilgrim's Tale in a volume of miscellaneous verse The Courte of Venus published between 1536 and 1540, and which was assigned by John Bale to Chaucer, may have no connection to Thynne.
His wife Anne, daughter of William Bond, clerk of the green cloth, was sole executrix and chief legatee.
He criticised Speght's work, and defended his father (letter first printed in Henry John Todd's Illustrations of Chaucer of 1810.