William Reynolds (also Rainolds, Raynolds, Latin Reginaldus) (c.1544 at Pinhorn near Exeter - 24 August 1594 at Antwerp) was an English Catholic theologian and Biblical scholar.
In 1575 he made a public recantation in Rome, and two years later went to Douai to study for the priesthood.
He then remained at the college, lecturing on Scripture and Hebrew, and helping Gregory Martin in translating the Reims Testament.
Reynolds translated several of the writings of Allen and Harding into Latin, and wrote a "Refutation" of William Whitaker's attack on the Reims version (Paris, 1583).
He assisted Gregory Martin in the translation of the Douay-Rheims Bible, which was also worked on by others at Douai, notably Allen, Thomas Worthington and Richard Bristow.