Gareth Williams is a UK musician associated with trumpet, piano, jazz, musical theatre, alternative and new musical theatre. The name refers to more than one musician in the record, including one born in 1953 and another born in 1982.

Gareth Williams, 1953–2001

This Gareth Williams is a former member of This Heat, the UK band known for moving between prog and post-punk. He leaves the group in 1981 and later goes to India. He also co-authors The Rough Guide to India. In 1985, he and Mary Currie create Flaming Tunes, a cassette-only collection of songs. Williams dies of cancer on 24 December 2001. Flaming Tunes is later reissued on CD in 2009.

Gareth Williams, born 1982

This Gareth Williams is a musician from the north-east of England. His work ranges across electronic, alternative rock, symphonic and orchestral scores, and he is described as developing material for future projects.