Mary Clarissa "May" Byron (nee Gillington; 1861 - 5 November 1936) was a British writer and poet, best known for her abridgements of J. M. Barrie's Peter Pan books. She published under the names May Byron, M.C. Gillington and Maurice Clare. Byron specialised in writing biographies of great artists, before going on to rewrite some of J. M. Barrie's works for younger readers and to write cookbooks.