Emma Christina Tennant FRSL (20 October 1937 – 21 January 2017) was an English novelist and editor of Scottish extraction, known for a post-modern approach to her fiction, often imbued with fantasy or magic. Several of her novels give a feminist or dreamlike twist to classic stories, such as Two Women of London: The Strange Case of Ms Jekyll and Mrs Hyde (from Robert Louis Stevenson's The Strange Case of Dr. Jekyll and Mr. Hyde). She also published under the name Catherine Aydy.