Alternate Empires

Alternate Empires is an anthology of alternate history science fiction short stories edited by Gregory Benford and Martin H. Greenberg as the first volume in their What Might Have Been series. It was first published in paperback by Bantam Books in August 1989, and in trade paperback by BP Books in March 2004. It was also gathered together with Alternate Heroes into the omnibus anthology What Might Have Been: Volumes 1 & 2: Alternate Empires / Alternate Heroes (Bantam Spectra/SFBC, July 1990).

The book collects twelve novelettes and short stories by various science fiction authors, with an introduction by Benford.