Wouter Deelen (English: Walter Deloenus, Latin: Gualterus Delenus, French: Gualtier Delvin) (c. 1500–1563) was a Dutch Anabaptist, Greek and Hebrew scholar, for a time librarian of Henry VIII, and then preacher at the Dutch church in London.
[4] In 1535 he fled to England, later becoming a librarian to Henry VIII, and working on a revision of the Latin New Testament of Erasmus.
In 1550 Edward VI appointed Deelen and Marten Micronius (c.1522-1559) as preachers of the Dutch refugee congregation at Austin Friars, where he worked with Polish Calvinist reformer Jan Łaski.
[5] It seems likely that Deelen was acquainted with Immanuel Tremellius and his student Christopher Carlisle at Cambridge, and may have been present at the latter's debate with Sir John Cheke on the doctrine of harrowing of Hell in 1552, since he published sharing Carlisle's view on removing the doctrine from the creeds.
Following the death of Edward VI (1553) aged 15, most of the Dutch, German and Polish Anabaptist community returned to the Low Countries.