This list was created by reviewer and author Ian Sales, in response to the Gollancz SF Masterworks series.
Ian explains:
"[These are all by women,] science fiction only, no fantasy; and no YA or children’s works. One work per author... Arbitrary end date of 2000.
For trilogies or series, I’ve listed the first book but put the trilogy/series name in square brackets afterwards. Asterisked titles are in Gollancz’s SF Masterworks series. And if the Masterworks series is allowed an anthology, so am I: hence the inclusion of Despatches from the Frontiers of the Female Mind. I’ve also sneakily included one or two collections, for those writers best known for their short fiction.
The list is in order of year of publication.
You know how it works: bold those you’ve read, italicise those you own but have not read. (If you’ve read the entire named series, you can even emboldenize that as well.)"
The titles bolded below are ones that I (Deborah) have read - some many times, some only once. I might also add some titles to Ian's list (or replace some, if I stick to the 'one title by each author' rule). And maybe get started on a Fantasy Mistressworks list :-)
1 * Frankenstein, Mary Shelley (1818)
2 * Herland, Charlotte Perkins Gilman (1915)
3 Orlando, Virginia Woolf (1928)
4 Lest Ye Die, Cicely Hamilton (1928)
5 Swastika Night, Katherine Burdekin (1937)
6 was deleted cos Francis Leslie Ashton is male (1951)
7 The Sword of Rhiannon, Leigh Brackett (1953)
8 Pilgrimage: The Book of the People, Zenna Henderson (1961)
9 Memoirs of a Spacewoman, Naomi Mitchison (1962)
10 Witch World, Andre Norton (1963)
11 Sunburst, Phyllis Gotlieb (1964)
12 Jirel of Joiry, CL Moore (1969)
13 Heroes and Villains, Angela Carter (1969)
14 Ten Thousand Light Years From Home, James Tiptree Jr (1973)
15 * The Dispossessed, Ursula K Le Guin (1974)
16 Walk to the End of the World, Suzy McKee Charnas (1974)
17 * The Female Man, Joana Russ (1975)
18 Missing Man, Katherine MacLean (1975)
19 * Arslan, MJ Engh (1976)
20 * Floating Worlds, Cecelia Holland (1976)
21 * Where Late the Sweet Birds Sang, Kate Wilhelm (1976)
22 Islands, Marta Randall (1976)
23 Dreamsnake, Vonda N McIntyre (1978)
24 False Dawn, Chelsea Quinn Yarbro (1978)
25 Shikasta [Canopus in Argos: Archives], Doris Lessing (1979)
26 Kindred, Octavia Butler (1979)
27 Benefits, Zoe Fairbairns (1979)
28 The Snow Queen, Joan D Vinge (1980)
29 The Silent City, Élisabeth Vonarburg (1981)
30 The Silver Metal Lover, Tanith Lee (1981)
31 The Many-Coloured Land [Saga of the Exiles], Julian May (1981)
32 Darkchild [Daughters of the Sunstone], Sydney J van Scyoc (1982)
33 The Crystal Singer, Anne McCaffrey (1982)
34 Native Tongue, Suzette Haden Elgin (1984)
35 The Handmaid’s Tale, Margaret Atwood (1985)
36 Jerusalem Fire, RM Meluch (1985)
37 Children of Anthi, Jay D Blakeney (1985)
38 The Dream Years, Lisa Goldstein (1985)
39 Despatches from the Frontiers of the Female Mind, Sarah Lefanu & Jen Green (1985)
40 Queen of the States, Josephine Saxton (1986)
41 The Wave and the Flame [Lear's Daughters], Marjorie Bradley Kellogg (1986)
42 The Journal of Nicholas the American, Leigh Kennedy (1986)
43 A Door into Ocean, Joan Slonczewski (1986)
44 Angel at Apogee, SN Lewitt (1987)
45 In Conquest Born, CS Friedman (1987)
46 Pennterra, Judith Moffett (1987)
47 Kairos, Gwyneth Jones (1988)
48 Cyteen , CJ Cherryh (1988)
49 Unquenchable Fire, Rachel Pollack (1988)
50 The City, Not Long After, Pat Murphy (1988)
51 The Steerswoman [Steerswoman series], Rosemary Kirstein (1989)
52 The Third Eagle, RA MacAvoy (1989)
53 * Grass, Sheri S Tepper (1989)
54 Heritage of Flight, Susan Shwartz (1989)
55 Falcon, Emma Bull (1989)
56 The Archivist, Gill Alderman (1989)
57 Winterlong [Winterlong trilogy], Elizabeth Hand (1990)
58 A Gift Upon the Shore, MK Wren (1990)
59 Red Spider, White Web, Misha (1990)
60 Polar City Blues, Katharine Kerr (1990)
61 Body of Glass (AKA He, She and It), Marge Piercy (1991)
62 Sarah Canary, Karen Joy Fowler (1991)
63 Beggars in Spain [Sleepless trilogy], Nancy Kress (1991)
64 A Woman of the Iron People, Eleanor Arnason (1991)
65 Hermetech, Storm Constantine (1991)
66 China Mountain Zhang, Maureen F McHugh (1992)
67 Fools, Pat Cadigan (1992)
68 Correspondence, Sue Thomas (1992)
69 Lost Futures, Lisa Tuttle (1992)
70 Doomsday Book, Connie Willis (1992)
71 Ammonite, Nicola Griffith (1993)
72 The Holder of the World, Bharati Mukherjee (1993)
73 Queen City Jazz, Kathleen Ann Goonan (1994)
74 Happy Policeman, Patricia Anthony (1994)
75 Shadow Man, Melissa Scott (1995)
76 Legacies, Alison Sinclair (1995)
77 Primary Inversion [Skolian Saga], Catherine Asaro (1995)
78 Alien Influences, Kristine Kathryn Rusch (1995)
79 The Sparrow, Mary Doria Russell (1996)
80 Memory [Vorkosigan series], Lois McMaster Bujold (1996)
81 Remnant Population, Elizabeth Moon (1996)
82 Looking for the Mahdi, N Lee Wood (1996)
83 An Exchange of Hostages [Jurisdiction series], Susan R Matthews (1997)
84 Fool’s War, Sarah Zettel (1997)
85 Black Wine, Candas Jane Dorsey (1997)
86 Halfway Human, Carolyn Ives Gilman (1998)
87 Vast, Linda Nagata (1998)
88 Hand of Prophecy, Severna Park (1998)
89 Brown Girl in the Ring, Nalo Hopkinson (1998)
90 Dreaming in Smoke, Tricia Sullivan (1999)
91 Ash: A Secret History, Mary Gentle (2000)
you can read more about this list on Ian Sales' blog
I read about it first on Tansy Rayner Roberts' blog