A Heart So White (Spanish: Corazón tan blanco) is a novel by Javier Marías which was first published in Spain in 1992.

It includes, in a case, two hardcover volumes: the novel and the dossier, with six texts by the author about his book, images of the original manuscript, reviews of the reception of the book, interviews, articles by specialists in the work by Marías and an unpublished letter from Juan Benet to Marías about the work.

The New York Times wrote "Marías's challenging and seductive technique reaches its pinnacle in A Heart So White.

"[3] The Independent wrote that it "starts from a suicide to explore the secrets of two marriages with all the hypnotic, even sinister, beauty of his style.

"[5] Marías and the translator Margaret Jull Costa were the joint winners of the International Dublin Literary Awards.