The Les Humphries Singers was a pop vocal group formed in Hamburg, West Germany by English singer Les Humphries. Active from 1969 until 1980, the group had several chart hits in Germany and in other European countries. The group, whose music drew heavily from gospel, country, folk, R&B and psychedelic influences, was notable for its large number of members, which at times numbered over a dozen to 30. Several of its members, including John Lawton, Jürgen Drews and Liz Mitchell, went on to have notable careers of their own.

John Cooper Lawton was a British rock and blues vocalist best known for his work with Lucifer's Friend, Uriah Heep and the Les Humphries Singers.