Darren O'Shaughnessy is an Irish writer and novelist. He is best known for his young adult fiction series The Saga of Darren Shan, The Demonata, and Zom-B, published under the pseudonym Darren Shan. The former was adapted into a manga series from 2006 to 2009 as well as a live-action film in 2009, with a prequel series, The Saga of Larten Crepsley, being released from 2010 to 2012.

The Demonata is a young adult horror/fantasy series by author Darren Shan.