Eric Ronald Griffiths (31 October 1940 – 29 January 2005) was a British musician and dry cleaner, he was best known as the rhythm guitarist in the original lineup of the Quarrymen until he left the group in the summer of 1958.

In 1950, the family moved to Halewood Drive, Woolton and at the age of 11 Griffiths won a scholarship to Quarry Bank High School where he met John Lennon, Pete Shotton and Rod Davis.

Griffiths was not invited to McCartney's house for the next rehearsal and when he coincidentally phoned them during the practice session, drummer Colin Hanton had to let him know he was no longer in the band.

All the surviving original Quarry Men were present and during the evening they gave an impromptu performance with borrowed instruments on the stage.

Griffiths then toured widely with the Quarrymen until his last performance at the SAS Royal Garden Hotel, Trondheim, Norway on 27 November 2004.