Universe 11 is an anthology of original science fiction short stories edited by Terry Carr, the eleventh volume in the seventeen-volume Universe anthology series.

It was first published in hardcover by Doubleday in June 1981, with a paperback edition from Zebra Books in January 1983.

[1] The book collects nine novelettes and short stories by various science fiction authors.

"Shadows on the Cave Wall" placed twenty-fifth in the 1982 Locus Poll Award for Best Novelette.

"The Gernsback Continuum" placed twenty-fourth in the 1982 Locus Poll Award for Best Short Story.