John Davies (13 November 1787 – 27 April 1855) was a Welsh (Glamorganshire) stone mason, and a composer.
He began his career as a stone-mason, notoriously working by both day and night.
He had been taught to play the dulcimer by a lodger at the age of about fourteen, but it was not until he was about thirty that he seriously began to study music, becoming both a performer and a composer.His works include a number of anthems and hymn tunes, such as "Gethsemane" (Lleuad yr Oes, 1827), which was arranged by Rowland Huw Pritchard.He died in 1855 in Llanelli, and was buried in Mynydd-bach cemetery.