John Griffiths (born 2 December 1952, Melbourne) is a musician and musicologist specialised in music for guitar and early plucked instruments, especially the vihuela and lute.
He has researched aspects of the sixteenth-century Spanish vihuela, its history and its music.
He has also had an international career as a solo lutenist, vihuelist, and guitarist, and as a member of the pioneer Australian early music group La Romanesca.
After a thirty-year career at the University of Melbourne (1980–2011), he now works as a freelance scholar and performer.