A sampling of Science Fiction – or Speculative Fiction — authors on Twitter, many with interesting things to say about books, the craft of writing, SF news, as well as science and the future.

In alphabetic order (compiled by Anonymous), the brief descriptions and selected works don’t begin to do justice to these fantastic authors. Yes, the list veers toward the SF end of SFF, with emphasis on writers of novels, rather than short stories. Apologies for the those who have been inadvertently left off. And many well-known authors, Connie Willis or Kim Stanley Robinson, don’t have accounts (probably because they’re busy writing)…

Daniel Abraham, Best-selling author and producer, half of the James S.A. Corey team (The Expanse, Leviathan Wakes) @AbrahamHanover

John Joseph Adams, editor of Science Fiction anthologies (Best American Science Fiction and Fantasy, Brave New Worlds) @JohnJosephAdams

Saladin Ahmed, Locus Award winning author (Throne of the Crescent Moon, Engraved on the Eye) @saladinahmed

Buzz Aldrin, Astronaut, Lunar Module pilot and moonwalker, as well as a SF author, collaborating with John Barnes (Encounter with Tiber, The Return) @TheRealBuzz

Charlie Jane Anders, Founding editor of io9, short story writer and award-winning Science Fiction author (All the Birds in the Sky) @charliejane

Lou Anders, Science Fiction author and Hugo Award winning editor (Frostborn, Nightborn) @LouAnders

Kevin J. Anderson, Best-selling Science Fiction author (The Sisterhood of Dune, Hellhole) @TheKJA

Lou Aronica, Science Fiction author, editor and publisher (Blue, Differential Equations) @laronica

Catherine Asaro, Nebula Award winning Science Fiction and Fantasy author (Saga of the Skolian Empire, The Quantum Rose) @Catherine_Asaro

Madeline Ashby, Science Fiction author and consultant (Company Town, iD) @MadelineAshby

Neal Asher, English Science Fiction author (The Departure, Zero Point) @nealasher

Margaret E. Atwood, Booker Prize, Arthur C. Clarke Award winning author and poet (The Handmaid’s Tale, Oryx and Crake) @MargaretAtwood

Paolo Bacigalupi, Locus, Hugo and Nebula Award wining Science Fiction author (The Windup Girl, The Water Knife) @paolobacigalupi

John Barnes, Science Fiction and YA author (Tales of the Madman Underground, Meeting Infinity) @JohnBarnesSF

Steven Barnes, Science Fiction author and frequent collaborator with Niven and Pournelle (Beowulf’s Children, Lion’s Blood) @StevenBarnes1

Elizabeth Bear, Hugo and John W. Campbell Award winning Science Fiction author (Hammered, Blood and Iron) @matociquala

Greg Bear, Nebula, Locus and Hugo Award winning Science Fiction author (Darwin’s Radio, Queen of Angels) @greg_bear

Chris Beckett, Arthur C. Clarke Award winning Science fiction author (Dark Eden, The Holy Machine) @chriszbeckett

Lauren Beukes, South African SF author, comics writer and journalist (Broken Monsters, The Shining Girls) @laurenbeukes

Aliette de Bodard, Software engineer, Nebula and Locus Award winning Science Fiction and Fantasy author (House of Shattered Wings, In Morningstar’s Shadow) @aliettedb

Ben Bova, Six time winner of the Hugo Award; Science Fiction and non-fiction author and Editor (Grand Tour series, The Science Fiction Hall of Fame) @BenBova

David Brin, Hugo, Nebula, Locus and Campbell Award winning Science Fiction author (Startide Rising, The Postman) @davidbrin

Tobias S. Buckell, Science Fiction author (Sly Mongoose, Halo: The Cole Protocol) @tobiasbuckell

Emma Bull, Science Fiction and Fantasy author (Falcon, Bone Dance) @coffeeem

Monica Byrne, Upcoming Science Fiction author and playwright (The Girl in the Road) @monicabyrne13

Pat Cadigan, Arthur C. Clarke Award winning Science Fiction author (Synners, Fools) @Cadigan

Christian Cantrell, Software developer and Science Fiction author (Containment, Equinox) @cantrell

Orson Scott Card, Hugo and Nebula Award wining Science Fiction author (Ender’s Game, Speaker for the Dead) @orsonscottcard

Jeff Carlson, Science Fiction and thriller author (Plague Year, Plague War) @authorjcarlson

Adam-Troy Castro, Science Fiction, Fantasy and YA author (Tangled Strings, Emissaries from the Dead) @adamtroycastro

Becky Chambers Science Fiction author (The Long Way to a Small, Angry Planet, A Closed & Common Orbit) @beckysaysawr

C.J. Cherryh, Hugo and Locus Award winning Science Fiction and Fantasy author (Cyteen, The Pride of Chanur) account no longer exists

Wesley Chu, John W. Campbell Award winning Science Fiction author (Time Salvager, Time Siege) @wes_chu

Liu Cixin , Chinese Science Fiction author, winner of the Hugo Award and the Galaxy Award (The Three Body Problem, The Dark Forest) @liu_cixin

Ernest Cline, Best-selling author and screenwriter (Ready Player One, Armada) @erniecline

Peter Clines, Science Fiction and horror author (The Fold, 14) @PeterClines

August Cole, Senior Fellow at the Brent Scowcroft Center, director of The Art of the Future (Ghost Fleet: A Novel of the Next World War, War Stories from the Future (ed.)) @august_cole

Eoin Colfer, Young adult Science Fiction and Fantasy author (Artemis Fowl, The Supernatualist) @eoincolfer

Brenda Cooper, Science Fiction author (The Silver Ship and the Sea, Wings of Creation) @brendacooper

James S.A. Corey, New York Times best-selling pseudonym (The Expanse, Nemesis Games) @JamesSACorey

Paul Cornell, Award-winning author and screenwriter for Doctor Who (The Severed Streets, Who Killed Sherlock Holmes) @Paul_Cornell

Bruce Coville, author of Young Adult fiction (My Teacher Is An Alien, Aliens Ate My Homework) @brucecoville

Katherine Cramer, Science Fiction author and editor (The Hard SF Renaissance, The Year’s Best SF Series) @KathrynECramer

Justin Cronin, New York Times best-selling author, winner of the PEN/Hemingway Award (The Passage, The Twelve) @jccronin

Julie Czernada, Science Fiction and Fantasy author and editor (This Gulf of Time and Stars, No Place Like Home) @julieczernada

Jack Dann Award-winning Science Fiction and Historical fiction author (The Memory Cathedral, The Silent) @jackmdann

Ellen Datlow, Hugo Award winning Science Fiction and Horror editor (The Best Horror of the Year, Year’s Best Fantasy and Horror) @EllenDatlow

Cory Doctorow, John W. Campbell and Locus Award winning Science Fiction author (Little Brother, Makers) @doctorow

Diane Duane, Young adult and Science Fiction and Fantasy author (So You Want to Be a Wizard, Wizard’s Dilemma, plus many Star Trek novels) @dduane

Tananarive Due, Science Fiction, fantasy and mystery author, screenwriter and producer (Ghost Summer, The Lake ) @TananariveDue

Scott Edelman, Science Fiction, Fantasy and Horror author and editor (What Will Come After, What We Still Talk About) @scottedelman

Amal El-Mohtar Hugo, Nebula, Locus award winning author (The Djinn Falls in Love and Other Stories) @tithenai

Kate Elliott, Fantasy and Science Fiction author (The Crown of Stars, Cold Steel) @KateElliottSFF

Eric Flint, Science Fiction author and editor. Writer of alternate histories. (1632, 1636: The Saxon Uprising) @EricFlint

Gregory Frost, Fantasy and Science Fiction (Lyrec, Shadowbridge) @gregory_frost

Neil Gaiman, Locus, Hugo and Nebula Award winning Science Fiction Author (American Gods, Coraline). Also Graphic Novels (The Sandman) @neilhimself

Charles E. Gannon, Professor and Best-selling and Nebula nominated author (Fire with Fire, Raising Caine) @cegannon1

David Gerrold, Hugo and Nebula Award winning Science Fiction author and screenwriter (The Man Who Folded Himself, The Martian Child) @DavidGerrold

William Gibson, Hugo, Nebula and Philip K. Dick Award winning Science Fiction and Cyberpunk author (Neuromancer, Mona Lisa Overdrive) @GreatDismal

Max Gladstone, Science Fiction/Fantasy author (Full Fathom Five, Last First Snow) @maxgladstone

Kathleen Goonan, John W. Campbell Award winning Science Fiction author (In War Times, This Shared Dream) @KathleenGoonan

Steven Gould, New York Times best-selling Science Fiction author and short story writer (Jumper, Reflex) @StevenGould

Daryl Gregory, Science Fiction and Fantasy author (Afterparty, Harrison Squared) @darylwriterguy

Nicola Griffith, Nebula and James Tiptree Award winning Science Fiction and Fantasy author and editor (Ammonite, With Her Body) @nicolaz

Lev Grossman, John W. Campbell Award winning Fantasy and Young Adult author (The Magicians, The Magician King) @leverus

Eileen Gunn, Nebula Award winning Science Fiction author and editor (Stable Strategies and Others, The Wiscon Chronicles) @eileen_gunn

Elizabeth Hand, Nebula and World Fantasy Award winning Science Fiction and Fantasy author (Walking the Moon, Winterlong) @Liz_Hand

William Hertling, Science Fiction author (Avogadro Corp., A.I. Apocalypse) @hertling

Nancy Holder, Bram Stoker Award wining Science Fiction and Horror Author (Pretty Little Devils, Wicked: Revelation), as well as works in the Buffyverse @nancyholder

Nalo Hopkinson, Aurora and Locus Award winning Fantasy and Science Fiction author (The New Moon’s Arms, So Long Been Dreaming) @nalohopkinson

Jason M. Hough, Best-selling author (The Darwin Elevator, Zero World) @JasonMHough

Hugh Howey, Best-selling Science Fiction author (Wool, Sand) @hughhowey

Meg Howrey, author of nonfiction and science fiction (The Wanderers, Blind Sight) @MegHowrey

N.K. Jemison, Locus Award winning author, Hugo nominee and short story writer (The Hundred Thousand Kingdoms, The Killing Moon) @nkjemisin

Guy Gavriel Kay, Canadian author, poet, and producer (River of Stars, Children of Earth and Sky) @guygavrielkay

Kay Kenyon, Science Fiction and Fantasy author (Maximum Ice, The Braided World) @KayKenyon

T. Jackson King, Science Fiction Author and reporter (Stellar Assassin, Escape from Aliens) @TJacksonKing

Dani Kollin, Prometheus Award winning Science Fiction author, with brother Eytan Kollin (The Unincorporated Man, The Unincorporated Woman) @dkollin

Ted Kosmatka, Science Fiction writer (The Flicker Men, The Games) @TKosmatka

Mary Robinette Kowal, John W. Campbell Award winning Author and puppeteer (Shades of Milk and Honey, Forest of Memory) @MaryRobinette

Nancy Kress, Hugo and Nebula Award winning Science Fiction author (Beggars in Spain, Probability Space) @nancykress

Mur Lafferty, Campbell Award and Parsec winning author and podcaster (Six Wakes, Playing for Keeps) @mightymur

Margo Lanagan, World Fantasy Award winning author (Yellowcake, Tender Morsels ) @margolanagan

Ann Leckie, Hugo and Nebula Award winning author (Ancillary Justice, Ancillary Mercy) @ann_leckie

Ursula K. Le Guin, Booker Prize, Hugo, Nebula, Locus Award winning science fiction and fantasy author (The Left Hand of Darkness, Lavinia) @ursulaleguin

Paul Levinson, Locus Award winning Science Fiction author (Silk Code, The Plot to Save Socrates) @PaulLev

Jacqueline Lichtenberg, Science Fiction author (Hero, To Kiss or To Kill) @JLichtenberg

Charles de Lint, Fantasy and Horror author (The Onion Girl, Widdershins) @cdelint

Ken Liu, Hugo, Nebula and World Fantasy award winning author and translator (Grace of Kings, The Paper Menagerie and Other Stories) @kyliu99

Ian McDonald, British Science Fiction author , winner of the Hugo, Locus, Philip K. Dick and John W. Campbell awards (Luna: New Moon, The Dervish House) @ianmcdonald

Seanan McGuire, John W. Campbell Award winning science fiction author, who also writes under the name Mira Grant (Feed, Symbiont) @seananmcguire

Maureen McHugh, Hugo, Locus and James Tiptree Jr. Award winning Science Fiction and Fantasy author (China Mountain Zhang, Half the Day is Night) @maureenmcq

Will McIntosh, Hugo Award winning Science Fiction and YA author (Burning Midnight, Soft Apocalypse) @WillMcIntoshSF

Vonda N. McIntyre, Hugo and Nebula Award winning Science Fiction author (Dreamsnake, The Moon and the Sun), also many novels in the Star Trek Universe @vondanmcintyre

Ken MacLeod, Scottish Science Fiction author (The Stone Canal, The Sky Road) @amendlocke

George R. R. Martin, Best-selling Hugo and Nebula Award winning Fantasy, Science Fiction and Horror author (Game of Thrones, A Dance with Dragons) @GeorgeRRMartin

Elizabeth Moon, Nebula and Robert A. Heinlein Award winning Science Fiction and Fantasy author (The Speed of Dark, Kings of the North) @emoontx

Richard K. Morgan, Science Fiction and Fantasy novelist (Altered Carbon, Thirteen) @quellist1

James Morrow, Award winning Science Fiction author (Towing Jehovah, Galapagos Regained( @jimmorrow11

Ramez Naam, Tehnologist, public speaker and author of nonfiction as well as Philip K. Dick and Prometheus Award winning Science Fiction (Nexus, Apex, Crux) @ramez

Linda Nagata, Nebula and Locus Award winning Science Fiction author (Vast, Memory) @LindaNagata

Annalee Newitz, founder of io9, tech editor at Ars Technica, non-fiction author (Scatter, Autonomous) @Annaleen

Emma Newman, Author of urban fantasy and science fiction (Planetfall, After Atlas) @EmApocalyptic

Garth Nix, Australian fantasy and YA novelist (Shade’s Children, To Hold the Bridge) @garthnix

Naomi Novik, Hugo and John W. Campbell Award winning author of alternate history (Crucible of Gold, Tongues of Serpents) @naominovik

Nnedi Okorafor, Professor of creative writing and Hugo Award winning author (The Book of Phoenix, Lagoon) @Nnedi

Daniel José Older, Author of urban fantasy and young adult novels (Shadowshaper, Bone Street Rumba) @djolder

Malka Older, Science Fiction and thriller author (Infomocracy, Null States) @m_older

Peter Orullian, writer of epic fantasy (Trial of Intentions, The Unremembered) @PeterOrullian

Ada Palmer, Historian, author of science fiction & fantasy (Too Like the Lightning, Seven Surrenders) @Ada_Palmer

Eliot Peper, editor, writer of science fiction thrillers (Cumulus, Neon Fever Dream) @eliotpeper

Gareth L. Powell, Winner of the BSFA Award for best novel (Ack-Ack Macaque, The Recollection) @garethlpowell

Sir Terry Pratchett may be the greatest writer of fantasy and comedy, winner of the World Fantasy Award for Life Achievement, now deceased (The Colour of Magic, The Light Fantastic) @terryandrob

Tim Pratt, Hugo Award winning Science Fiction and Fantasy author (Spell Games, Dead Reign) @timpratt

Cherie Priest, Locus Award winning Science Fiction and Horror author (Boneshaker, Fatham) @cmpriest

Hannu Rajaniemi, Locus and John W. Campbell Award winning Science Fiction author and mathematician (The Fractal Prince, The Causal Angel) @hannu

Cat Rambo, Fantasy and Science Fiction author and editor (Eyes Like Sky and Coal and Moonlight) @catrambo

Marguerite Reed, Philip K. Dick Special Citation award winning author (Archangel) @MargueriteReed9

Mike Resnick, Multiple Hugo and Locus Award winning Science Fiction author (Starship: Mutiny, Santiago) @ResnickMike

Alastair Reynolds, Former ESA scientist, Science Fiction author (The Medusa Chronicles, Blue Remembered Earth) @AquilaRift

Rudy Rucker, Philip K. Dick Award winning Science Fiction author and mathematician (Software, Realware) @rudytheelder

Kristine Kathryn Rusch, Hugo Award winning Science Fiction and Fantasy author and editor (Hitler’s Angel, Totally Spellbound) , as well as works in the Star Trek universe @KristineRusch

Geoff Ryman, Professor of writing, author of Science Fiction, fantasy and historic novels (Was, The Unconquered Country) @geoffryman

Brandon Sanderson, Science Fiction, fantasy and author (Calamity, Firefight) @BrandSanderson

Robert J. Sawyer, Hugo, Nebula and John W. Campbell Award winning Science Fiction author (Rollback, Flashforward) @RobertJSawyer

John Scalzi, John W. Campbell and Hugo Award winning author (Fuzzy Nation, Old Man’s War) @scalzi

Lawrence M. Schoen, Award-winning author (Barsk: The Elephant’s Graveyard, Buffalito Destiny) @klingonguy

Karl Schroeder, Aurora Award winning Science Fiction author (Permanence, The Sunless Countries) @KarlSchroeder

Nisi Shawl, award-winning author of SFF and alternate history (EverFair, Something More and More) @NisiShawl

Scott Sigler, Parsec Award winning Science Fiction and Horror author (Infected, Contagious) @scottsigler

Dean Wesley Smith, Science Fiction author (Laying the Music to Rest, The Hunted) @DeanWesleySmith

Michael Stackpole, Science Fiction and Fantasy author and Game Designer (I, Jedi, Evil Trimphant) @MikeStackpole

Bruce Sterling, Hugo and Campbell Award winning Science Fiction and Cyberpunk author (Distraction, The Caryatids) @bruces

Neal Stephenson, Hugo, Locus and Prometheus Award winning Science Fiction author (Quicksilver, The Diamond Age) @nealstephenson

Charles Stross, Locus and Hugo Award winning Science Fiction author (Halting State, Rule 34) @cstross

Daniel Suarez, New York Times best-selling author of high-tech, science fiction thrillers (Change Agent, Daemon) @itsDanielSuarez

Tom Sweterlitsch author of science fiction thrillers (The Gone World, Tomorrow and Tomorrow) @LetterSwitch

Rachel Swirsky, Nebula Award winning short story writer (How the World Became Quiet, A Memory of Wind) @rachelswirsky

Lavie Tidhar, Seiun Award and World Fantasy Award winning author (Central Station, A Man Lies Dreaming) @lavietidhar

Ian Tregillis, Physicist and Science Fiction author (The Rising, The Mechanical) @ITregillis

Hayden Trenholm, Science Fiction and mystery writer ( Blood & Water, Strangers Among Us) @HaydenTrenholm

Harry Turtledove, Writer of alternate history, fantasy and science fiction (Guns of the South, How Few Remain ) @HNTurtledove

Catherynne Valente, James Tiptree, Andre Norton award winning SF and Fantasy author (Space Opera, Radiance) @catvalente

Jeff VanderMeer, Fantasy and Science Fiction author (Finch, Annihilation) @jeffvandermeer

Andy Weir, Best-selling Science Fiction author (The Martian, Artemis) @andyweirauthor

Scott Westerfeld, Young adult and Science Fiction author (Leviathon, Uglies) @ScottWesterfeld

Fran Wilde, Andre Norton Award winning Science fiction and fantasy author (Updraft, Cloudbound) @fran_wilde

Daniel H. Wilson, Roboticist and New York Times best-selling author (Robopocalypse, Robogenesis) @danielwilsonpdx

G. Willow Wilson, World Fantasy Award winning and Graphic Novel author (Alif the Unseen, The Butterfly Mosque) @GWillowWilson

Gary K.Wolfe, Science Fiction editor and critic @garykwolfe

Alyssa Wong, Nebula Award winning author of science fiction and horror (A Fist of Permutations and Wildflowers ) @crashwong

Charles Yu, Science Fiction novelist and short story writer (How to Live Safely in a Science Fictional Universe, Third Class Superhero) @charles_yu

Liz Ziemska, Literary agent and SFF author (Mandelbrot the Magnificent) @Ziemska

Leni Zumas, Science fiction author and professor (Red Clocks, The Listeners) @lenizumas

Other Science Fiction sites:

SFX Magazine, Sci Fi and Fantasy Magazine @SFXmagazine

StarShipSofa Podcast of Science Fiction stories @StarShipSofa

Locus Magazine, Science Fiction and Fantasy News @LocusChat

SF Signal, a Science Fiction blog @sfsignal

The Hugo Awards, News on the Hugos @TheHugoAwards

io9, Commentary and updates on Science, Science Fiction and Media @io9

SFWA Authors, Blog posts from members of the Science Fiction and Fantasy Writers of America @SFWAauthors

Clarkesworld, Online Science Fiction Magazine @clarkesworld

Tor Books, Science Fiction and Fantasy News @torbooks

Baen Books, Science Fiction and Fantasy Publishing @BaenBooks

Ace Science Fiction, Science Fiction and Fantasy Publishing @AceRocBooks

Museum of Science Fiction, to open in Washington DC @Museum_SciFi

Hollywood Science Fiction Museum, to open in Hollywood, @hollywoodscifi

Novum Future, Science fiction news and podcast, @NovumPodcast

Fantasy Faction, Fantasy Book Reviews @FantasyFaction

B&N SF & F, Barnes & Noble Science Fiction & Fantasy @BNSciFi

SF Encyclopedia, Updates from the Encyclopedia of Science Fiction @SFEncyclopedia

SF Editor’s Picks, editor’s Science Fiction recommendations @SFEditorsPicks