Phyllis Hartnoll (September 22, 1906, Egypt - January 8, 1997, Lyme Regis) was a British poet, author and editor.
Hartnoll studied at the University of Oxford, where she won the Newdigate Prize for poetry in 1929. Later she worked as an editor on many Oxford University Press publications, including the Oxford Companion to the Theatre. She wrote the introduction to the Gothic novel Zastrozzi by Percy Bysshe Shelley which was republished in a limited edition by The Golden Cockerel Press in 1955.