César Aira (born on February 23, 1949 in Coronel Pringles, Buenos Aires Province) is an Argentine writer and translator, considered by many as one of the leading exponents of Argentine contemporary literature, in spite of his limited public recognition.

He has published over fifty books of stories, novels and essays. Indeed, at least since 1993 a hallmark of his work is an almost frenetic level of writing and publication -two to four novella-length books each year.