María Sonia Cristoff (Trelew, 1965) is an Argentine writer and translator. Regardless of how her books are classified, they are all an exploration of "hybrid narrative."

María Sonia Cristoff was born in 1965 in the city of Trelew, Chubut Province, Argentina. She studied Literature at the University of Buenos Aires. She published the non-fiction books Falsa calma (2005), about the inhabitants of a selection of ghost towns in Patagonia, and Desubicados (2006), a story set during a day in a Buenos Aires zoo that addresses animal themes as a way to question ways of life in a large contemporary metropolis.