Rosemary Hayes (born 10 December 1942) is a British author who has written around 50 books for children aimed at ages from seven years to teenagers.

She worked for Cambridge University Press and then set up her own publishing house, Anglia Young Books.

She read avidly as a child and was particularly influenced by the books of Elizabeth Goudge and the Chronicles of Narnia by C. S. Lewis.

Hayes attended Brightwalton Primary School from 1947-50 then St Gabriel’s, Sandleford Priory in Newbury.

In 1989, she launched her own publishing company, Anglia Young Books, producing curriculum-related historical fiction for primary schools.