Her works appear in anthologies edited by Charlaine Harris, Jim Butcher, and John Joseph Adams. McGuire's short fiction has been published in Apex Magazine, Nightmare Magazine, Lightspeed Magazine, and others.

Star Wars: Canto Bight anthology (contributor, as Mira Grant).

Main article: Seanan McGuire bibliography Series She is the author of the Spider-Gwen series and has contributed to several other franchises. In 2018, McGuire began writing for Marvel Comics.

Sixteen books are currently available and the next installment is planned for September 2023. Her longest-running series is the October Daye books, which began in 2009 with Rosemary and Rue. She published Feed under the pseudonym Mira Grant in 2010, thus establishing herself as an urban fantasy writer and her Grant persona as a horror/science fiction writer. Rosemary and Rue was her first published novel, released in 2009. She produced the musical album Pretty Little Dead Girl in 2006 and published her first short story to the Edge of Propinquity in 2008. Her earliest publication was a contribution to the June 2002 poetry anthology Speculon. Most follow speculative fiction themes of fantasy, science fiction, and horror.

McGuire has published filk music, poetry, short fiction, essays, and novels. She has autism, which she was diagnosed with in 2020, attention deficit hyperactivity disorder and obsessive–compulsive disorder, diagnosed when she was nine. She identifies as pansexual, bisexual, and demisexual and writes numerous queer characters into her work. Before becoming a full-time writer, she worked at a reptile rescue organization. McGuire frequently posts online about roleplaying games, My Little Pony, and caring for her menagerie of cats. She has described her interests as including 'swamps, long walks, long walks in swamps, things that live in swamps, horror movies, strange noises, musical theater, reality TV, comic books, finding pennies on the street, and venomous reptiles.' McGuire was born in California and attended University of California, Berkeley. In 2013, McGuire received a record five Hugo nominations in total, two for works as Grant and three under her own name. Her 2016 novella Every Heart a Doorway received a Nebula Award, Hugo Award, Locus Award, and Alex Award.

Campbell Award for Best New Writer by the World Science Fiction Convention.

Deborah Baker to write the 'Up-and-Under' children's portal fantasy series. She uses the pseudonym Mira Grant to write science fiction/ horror and the pseudonym A. McGuire is known for her urban fantasy novels. Seanan McGuire (pronounced SHAWN-in born January 5, 1978, in Martinez, California) is an American author and filker. Locus Award for Best Fantasy Novel (2020).Campbell Award for Best New Writer (2010)

Middle game seanan mcguire