The Cuckoo Clock is a British children's fantasy novel by Mary Louisa Molesworth, published in 1877 by Macmillan. It was originally published under the pen name Ennis Graham and reissued in 1882 as by Mrs. Molesworth, the name by which she is widely known. Both of those editions and many later ones were illustrated by Walter Crane; an 1893 uniform edition is available online at the University of Pennsylvania. An edition illustrated by Maria L. Kirk was published in 1914; it is available online at HathiTrust Digital Library.