Daniel O'Malley is an acclaimed Australian novelist, known for his contribution to the genres of fantasy and horror.

He was born in Canberra, Australia, and pursued his higher education in the United States. O'Malley graduated from Michigan State University and earned a Master's Degree in medieval history from Ohio State University. After completing his studies, he returned to Australia, where he took up a position with the Australian Transport Safety Bureau, crafting press releases for government investigations into aviation and maritime incidents.

O'Malley is best known for his novel, The Rook, which is part of the Checquy series. His writing is characterized by a blend of fantasy elements and intriguing narrative style.