Catherine Elizabeth Grenville is an Australian author. She has published fifteen books, including fiction, non-fiction, biography, and books about the writing process. In 2001, she won the Orange Prize for The Idea of Perfection, and in 2006 she won the Commonwealth Writers' Prize for The Secret River. The Secret River was also shortlisted for the Man Booker Prize.

The Secret River is a 2005 historical novel by Kate Grenville about an early 19th-century Englishman transported to Australia for theft. The story explores what might have happened when Europeans colonised land already inhabited by Aboriginal people. The book has been compared to Thomas Keneally's The Chant of Jimmie Blacksmith and to Peter Carey's True History of the Kelly Gang for its style and historical theme.