Got this from Nicholas Whyte, who got it from James Nicoll. Italicize the authors you’ve heard of before reading this list of authors, bold the ones you’ve read at least one work by, underline the ones of whose work you own at least one example of.

Lynn Abbey
Eleanor Arnason
Octavia Butler
Moyra Caldecott
Jaygee Carr
Joy Chant
Suzy McKee Charnas
C. J. Cherryh
Jo Clayton
Candas Jane Dorsey
Diane Duane
Phyllis Eisenstein
Cynthia Felice
Sheila Finch
Sally Gearhart
Mary Gentle
Dian Girard
Eileen Gunn
Monica Hughes
Diana Wynne Jones
Gwyneth Jones
Leigh Kennedy
Lee Killough
Nancy Kress
Katherine Kurtz
Tanith Lee
Megan Lindholm (AKA Robin Hobb)
Elizabeth A. Lynn
Phillipa Maddern
Ardath Mayhar
Vonda McIntyre
Patricia A. McKillip
Janet Morris
Pat Murphy
Sam Nicholson (AKA Shirley Nikolaisen)
Rachel Pollack
Marta Randall
Anne Rice
Jessica Amanda Salmonson
Pamela Sargent
Sydney J. Van Scyoc
Susan Shwartz
Nancy Springer
Lisa Tuttle
Joan Vinge
Élisabeth Vonarburg
Cherry Wilder
Connie Willis

I’ll also note that I own every book written by Gwyneth Jones, Mary Gentle and Sydney J Van Scyoc.