Outcast is a 2007 children's fantasy adventure novel written by Michelle Paver and illustrated by Geoff Taylor. It is the fourth book in the Chronicles of Ancient Darkness. It is preceded by Wolf Brother (2004), Spirit Walker (2005), and Soul Eater (2006), and followed by Oath Breaker (2008), Ghost Hunter (2009), Viper's Daughter (2020), Skin Taker (2021), and Wolfbane (2022).

Michelle Paver is a British novelist and children's writer, best known for her children's historical fantasy series Chronicles of Ancient Darkness, set in prehistoric Europe. Born in Malawi, she moved to England as a young child. Paver started her career as a lawyer, before becoming a full-time writer. She is also the author of the children's series Gods and Warriors, as well as novels for adults, including the Daughters of Eden trilogy and several standalone books.