Sonali Deraniyagala (born 1964) is a Sri Lankan economist and memoirist. She studied economics at the University of Cambridge and earned her doctorate from the University of Oxford. A faculty member at SOAS University of London and a researcher affiliated with Columbia University, her academic work focuses on economic development and post-disaster recovery. She is best known for her memoir *Wave: Life and Memories after the Tsunami*, which recounts the devastating loss of her husband, two sons, and parents in the 2004 Indian Ocean tsunami. Widely praised for its unsentimental portrayal of grief and memory, the book was named one of *The New York Times*' Ten Best Books of 2013 and received the PEN Ackerley Prize.
