The Year's Best Science Fiction, Ninth Annual Collection, edited by Gardner Dozois - covering stories from 1991.

Summation: 1991 by Gardner Dozois
"Beggars in Spain" by Nancy Kress (Hugo & Nebula nominee)
"Living Will" by Alexander Jablokov
"A Just and Lasting Peace" by Lois Tilton
"Skinner’s Room" by William Gibson
"Prayers on the Wind" by Walter Jon Williams (Hugo nominee)
"Blood Sisters" by Greg Egan
"The Dark" by Karen Joy Fowler
"Marnie" by Ian R. MacLeod
"A Tip on a Turtle" by Robert Silverberg
"Ubermensch!" by Kim Newman
"Dispatches from the Revolution" by Pat Cadigan
"Pipes” by Robert Reed
"Matter’s End" by Gregory Benford (Hugo winner - best story; Nebula nominee)
"A History of the Twentieth Century, with Illustrations" by Kim Stanley Robinson
"Gene Wars" by Paul J. McAuley (Hugo & Nebula nominee)
"The Gallery of His Dreams" by Kristine Kathryn Rusch (Hugo nominee)
"A Walk in the Sun" by Geoffrey A. Landis
"Fragments of and Analysis of a Case of Hysteria" by Ian McDonald
"Angels in Love" by Kathe Koja (Hugo & Nebula winner - best novelette)
"Eyewall" by Rick Shelley
"Pogrom" by James Patrick Kelly
"The Moat" by Greg Egan
"The Voices" by Jack Dann (Nebula winner - best novella; Hugo nominee)
"FOAM" by Brian W. Aldiss
"Jack" by Connie Willis (Hugo winner - best story; Nebula nominee)
"La Macchina" by Chris Beckett
"One Perfect Morning, with Jackals" by Mike Resnick (Hugo nominee)
"Desert Rain" by Mark L. Van Name & Pat Murphy
Honorable Mentions: 1991