Charles Newby (18 June 1941 – 22 May 2023) was a British musician who was briefly the bassist for the Beatles for several gigs in December 1960, while Stuart Sutcliffe was still in Hamburg focusing on his art career.

[1] Newby had been with The Black Jacks (Best's group), and was now attending university; however, he was on holiday, and so he agreed to play with the Beatles.

John Lennon asked him to go to West Germany for the Beatles' second trip, but Newby chose to return to university.

[1] After Lennon and George Harrison both declined to switch to bass guitar, Paul McCartney, who previously played guitar and piano, reluctantly became the band's bass player.

In 2016, Newby began performing as a member of the Quarrymen, the band that was the precursor to the Beatles.