Sven Delblanc (May 26, 1931 – December 15, 1992) was a Swedish author and professor of literature.

Delblanc was an Associate Professor in the history of literature at Uppsala University from 1965.

His parents divorced and the father, Siegfried Axel Herman Delblanc, remarried.

His paternal grandfather, Friedrich Hermann Delblanc, a bookmaker in Stockholm, was from Leipzig, Saxony, Germany.

Sven Delblanc's maternal relatives were from Väse in Värmland in the west of Sweden.