John Duff Lowe (born April 1942, in West Derby, Liverpool, Lancashire) was a pianist from the middle-late 1950s. He was invited to play piano with The Quarrymen by Paul McCartney in 1958.
Lowe was in the band for two years, and he was there when the Quarrymen went to Percy Phillips' home studio in Liverpool to record a couple of songs for a vanity disc. The two tracks cut that day were "That'll Be the Day" and "In Spite of All the Danger." Lowe maintained possession of the tracks and, in 1981, sold the recordings to Paul McCartney. Its estimated value was around 12,000 pounds. McCartney had the record remastered and they appeared on The Beatles Anthology 1.
In 1994, John Lowe played again with The Quarrymen for the album Open for Engagements. Of the 1994 lineup, only Rod Davis (guitar) also played for The Quarrymen in the 1950s.