John Charles "Duff" Lowe (13 April 1942 – 22 February 2024) was an English pianist.

[1] He was in The Quarrymen for two years, and was there when the band recorded a couple of songs for a vanity disc at Percy Phillips' home studio in Liverpool.

Of the 1994 lineup, only Rod Davis (guitar) and Lowe (piano) had played for the Quarrymen in the 1950s.

Lowe, despite not being classified as an official member, toured with Rod Davis, Len Garry and Colin Hanton as John Lennon's Original Quarrymen at Beatles events around the world until 2017.

On 28 August 2006, the 10-inch shellac 3-track EP (33 rpm) "50 years later" was released with live versions of "Down by the riverside" by the Quarrymen's Rod Davis, Len Garry, Colin Hanton and John Duff Lowe and guest bassist Lothar Becker and guest washboard player Ednund Thielow in an edition of 10 individual pieces.