Jonathan Francis Gray, known professionally as Spike, or Spike Gray, is an English singer-songwriter and founding member of the British rock band the Quireboys, for whom he performed as lead singer and released 12 studio albums. He is recognised for his raspy voice which led to comparisons with Rod Stewart.
As a solo performer, Spike has collaborated with Tyla of The Dogs D'Amour, and released five solo studio albums. In March 2022, fellow Quireboys members announced that Spike had been fired from the band, leading to an ongoing dispute about ownership of the Quireboys name.