Deirdre Cartwright (born 27 July 1958) is a British guitarist and composer.
Cartwright was a member of Painted Lady, which later became known as Girlschool; she left to form another band, Tour De Force.In 1983 Cartwright provided the guitar tuition element of the BBC/PBS series Rockschool alongside bass guitarist Henry Thomas and drummer Geoff Nicholls. In 1989, along with Alison Rayner, she started a regular monthly night at the Vortex Jazz Club called Blow The Fuse.