- Garry KingDecade started: 1980sGenres: heavy metal music
- Gary BrookerFormed / started: 29 May 1945Split up / ended: 19 February 2022
- Gary BrookerBorn in: The Salvation Army Mothers' Hospital, Front BuildingsDecade started: 1960s
- Gary FletcherBorn in: LondonGenres: rock and roll
- Gary GlitterBorn in: BanburyDecade started: 1960s
- Gary HughesFormed / started: 5 July 1967Note: English hard rock singer/keyboardist
- Gary JamesBorn in: BeckenhamDecade started: 1960s
- Gary MooreFormed / started: 4 April 1952Note: Thin Lizzy, blues guitar
- Gary NuttallBorn in: LiverpoolDecade started: 1990s
- Gavin HarrisonFormed / started: 28 May 1963Note: Porcupine Tree / King Crimson
- Ged GrimesBorn in: DundeeDecade started: 1960s
- Ged PeckBorn in: West HendonDecade started: 1940s
- Geezer ButlerBorn in: BirminghamDecade started: 1960s
- Geoff DownesFormed / started: 25 August 1952Note: English keyboardist
- Geoff NichollsBorn in: BirminghamDecade started: 1940s
- Geordie WalkerFormed / started: 18 December 1958Split up / ended: 26 November 2023
- George HarrisonFormed / started: 24 February 1943Note: The Beatles
- George MartinFormed / started: 3 January 1926Note: producer, arranger, composer, conductor, audio engineer, and musician
- George MichaelFormed / started: 25 June 1963Split up / ended: 25 December 2016
- Gerry LaffyBorn in: HoxtonDecade started: 1970s
- Gerry McGheeBorn in: GlasgowDecade started: 1980s
- Gerry RaffertyFormed / started: 16 April 1947Split up / ended: 4 January 2011
- Gilson LavisFormed / started: 27 June 1951Split up / ended: 5 November 2025
- Ginger BakerFormed / started: 19 August 1939Split up / ended: 6 October 2019
- Ginger WildheartFormed / started: 17 December 1964Note: frontman of The Wildhearts
- Ginger WildheartBorn in: South ShieldsDecade started: 1980s
- Glenn HughesFormed / started: 21 August 1951Note: UK rock bassist and vocalist
- Glenn ShorrockBorn in: ChathamDecade started: 1960s
- Glenn TiptonBorn in: BlackheathDecade started: 1960s
- Gordon HaskellFormed / started: 27 April 1946Split up / ended: 16 October 2020
- Graeme CrallanBorn in: HartlepoolDecade started: 1970s
- Graham BlythBorn in: ChessingtonDecade started: 1940s
- Graham BondFormed / started: 28 October 1937Split up / ended: 8 May 1974
- Graham BonnetFormed / started: 23 December 1947Note: British rock vocalist
- Graham MabyBorn in: GosportDecade started: 1970s
- Graham OliverBorn in: MexboroughDecade started: 1970s
- Greg LakeFormed / started: 10 November 1947Split up / ended: 7 December 2016
- Gypie MayoFormed / started: 24 July 1951Split up / ended: 23 October 2013
- Gypie MayoBorn in: HammersmithDecade started: 1950s