Parts of the Bible have been translated into Welsh since at least the 15th century, but the most widely used translation of the Bible into Welsh for several centuries was the 1588 translation by William Morgan, Y Beibl cyssegr-lan sef Yr Hen Destament, a'r Newydd as revised in 1620. The Beibl Cymraeg Newydd was published in 1988 and revised in 2004. Beibl.net is a translation in colloquial Welsh which was completed in 2013.

Welsh is a Celtic language of the Brittonic subgroup that is native to the Welsh people. Welsh is spoken natively in Wales, by some in England, and in Y Wladfa.