Gaz Coombes (born Gareth Michael Coombes on March 8, 1976 in Oxford, United Kingdom) is the vocalist and guitarist for the band Supergrass. His large sideburns have become his 'trademark' image.

He first entered the music world aged fourteen as the lead singer of the band The Jennifers. The band undertook a nationwide tour before Gaz was fifteen. They released one single in 1992 on Nude Records before they split. Fellow band member Danny Goffey, however, made a pact with Gaz that they'd continue to work together in the future. Less than a year later, along with a co-worker by the name of Mick Quinn, Supergrass was formed with Gaz on lead vocals and guitar. When Supergrass were signed for their first recording contract, Gaz was still under 18 so had to have his mother sign the contract for him.

Trivia

• Gaz now lives in Brighton, England, with his wife and child.
• Gaz is the younger brother of keyboardist and fellow Supergrass member Rob Coombes, and brother of 22-20s keyboardist Charly Coombes.
• Gaz appeared on The Annex on 2fm with Jenny Huston alongside Danny Goffey before Supergrass took the stage at Malahide Castle in Dublin, Ireland to support Arctic Monkeys on Saturday June 16 2007.