Kelley Armstrong is a Canadian writer, primarily of fantasy novels since 2001.
She has published twenty-one fantasy novels, thirteen to date in her Women of the Otherworld series, one in her Cainsville series, six in her Darkest Powers series and one in the Age of Legends series. She has also published a middle-grade fantasy novel in the Blackwell Pages Trilogy, with co-author Melissa Marr. As well, she is the author of three crime novels, the Nadia Stafford trilogy. She has also written several serial novellas and short stories for the Otherworld series, some of which are available free from her website.