Graham Leslie Lionel Clark (born 16 December 1959) is an English violinist based in Buxton, Derbyshire.

He also plays electric guitar. A freelance violinist in most styles of jazz, rock, blues and pop, he specialises in improvisation.

He worked with Daevid Allen from 1988 to 2014:

August 1988 – October 1989: with the Invisible Opera Company of Tibet October 1989 – December 1991: with Gongmaison February 1992 – December 1992: with Magick Brothers / Gong December 1996 – 2014: with Magick Brothers

He has also worked with Andy Sheppard, Keith Tippett, Tim Richards, Phil Lee, Paz, Brian Godding, Elbow, Lamb, Bryan Glancy, Little Sparrow, Jah Wobble, Graham Massey, Louis Gordon and Liz Fletcher.