David Lewis (c. 1520 – 27 April 1584) was a Welsh lawyer, judge, and the first Principal of Jesus College, Oxford.
In 1546 Lewis was appointed Principal of New Inn Hall, but he became an advocate in the Court of Arches in 1548 (after obtaining his DCL and resigned his position in the same year.
He was a Master in Chancery from 1553, and was also one of the members of parliament for Steyning (26 October – December 1553) and Monmouthshire (8 November 1554 – January 1555).
Lewis was appointed a Judge of the High Court of Admiralty in 1558, and was involved in matters such as inquiries in 1564 into complaints of piracy against Spanish subjects, and an examination of Martin Frobisher in 1566 when Frobisher was suspected of fitting out a ship for piracy.
[1] He died unmarried and was buried in St Mary's Church, Abergavenny, in what is now known as the Lewis chapel.