Simon Johnathon Gallup[1] (born 1 June 1960) is an English musician who is best known as bassist for The Cure, which he first joined in 1979 and for which he has played through most of the band's history.

Starting in 1976, he frequented the music scene in nearby Crawley, where his older brother Ric worked in a record shop and knew many local musicians.

[5] A short time later, original Cure bassist Michael Dempsey left the band, and Gallup was recruited as his replacement.

[10] He sang on the tracks "The Ring" and on "Happy Families Waiting (At the Skylab Landing Bay)" the only released recordings in which he ever performed lead vocals.

[2] This caused him to miss several dates of the tour for the Wish album, at which time bassist Roberto Soave filled in temporarily.

[13] Gallup's son Eden became a member of the Cure's road crew and has occasionally filled in during gigs when his father was unable to appear for personal reasons.

[15] In an unexplained incident in August 2021, Gallup announced on Facebook that he had left the Cure after 37 years, stating that he "just got fed up of betrayal.