Sergio Chejfec is an Argentine Jewish writer. He was born in Buenos Aires in 1956. From 1990 to 2005 he lived in Venezuela, where he published Nueva sociedad, a journal of politics, culture and the social sciences. He currently lives in New York City and teaches in the Creative Writing program in Spanish at New York University.

Chejfec has written novels, essays and a poetry collection. His works include Lenta biografía (1990), Los planetas (1999), Boca de lobo (2000), Los incompletos (2004), Baroni: un viaje (2007), Mis dos mundos (2008), and La experiencia dramática (2012). He has been compared to Juan José Saer, which he finds flattering but not accurate. His novels usually feature a slow-paced narration that interweaves a minimal plot with reflection. Memory, political violence, and Jewish-Argentine culture and history are some of the recurring themes in his work.