Joolz Denby (born Julianne Mumford, 9 April 1955) is an English poet, novelist, artist and tattooist based in Bradford, West Yorkshire.

[1] Born to an Army family at Colchester Barracks in Essex, England, Julianne Mumford moved with her parents to Harrogate, North Yorkshire at age 11.

While a pupil at Private School Harrogate Ladies' College,[2] she started to hang around with local bikers at age 15, although she was more interested in the mechanical side of motorcycles than becoming a 'biker-chick'.

[3][4] In 1975, at age 19, she married Kenneth Denby, who wanted to be a "prospect" or probationary member of the Bradford chapter of the Satans Slaves Motorcycle Club.

She designed merchandise for New Model Army, New York Alcoholic Anxiety Attack, Monster Jaw and Utopian Love Revival, and created sleeve art.

Denby worked on the screenplay project "Exilée" and "Secret Angles" with film maker Nemo Sandman and produced poetry for Bradford Council as part of the city's bid for 2008 Capital of Culture.

She wrote poems 'Northlands', commissioned by Yorkshire Forward for their Regional Economic Strategy Document, and for the Royal Armouries, the Captain Cook Museum in Whitby and Alchemy Asian Arts.