Uilliam Ó Duinnín
Uilliam Ó Duinnín (fl. 1670–1682) was an Irish scribe.
The son of Domhnall Óg Ó Duinnín, Uilliam was the owner of MS 1336, which he may have sold to Edward Lhuyd. He transcribed William Bedell's Irish Old Testament, which was published in 1685.
- The Manuscript Collection of Dubhaltach MacFhirbhisigh, William O'Sullivan, p. 339–347, in Seanchas: Studies in Early and Medieval Irish Archaeology, History and Literature in Honour of Francis J. Byrne, edited by Alfred P. Smyth. Dublin, Four Courts, 1999. ISBN 978-1-85182-489-2