James Rendel Harris (Plymouth, Devon, 27 January 1852 – 1 March 1941) was an English biblical scholar and curator of manuscripts, who was instrumental in bringing back to light many Syriac Scriptures and other early documents. His contacts at the Saint Catherine's Monastery on Mount Sinai in Egypt enabled twin sisters Agnes Smith Lewis and Margaret Dunlop Gibson to discover there the Sinaitic Palimpsest, the oldest Syriac New Testament document in existence.