Gavin J. Grant runs Small Beer Press with his wife Kelly Link, for which they won the 2008 World Fantasy Award (Special Award-Professional) after being finalists in 2002 through 2004 (2002 as Non-Professional). Together they publish the 'zine Lady Churchill's Rosebud Wristlet, a 2006 Hugo semi-prozine finalist. With Michael J. DeLuca he runs, an ebooksite for independent presses.

From 2004 to 2008 he co-edited The Year's Best Fantasy & Horror with Link and Ellen Datlow for St. Martin's (the 17th through 21st collections), for which they won the Stoker (17) and Locus (18), and were World Fantasy (21), British Fantasy (17 and 19) and Locus (the other four) finalists. With Link, he also edited The Best of Lady Churchill's Rosebud Wristlet (Del Rey, 2007), a Locus finalist, and Steampunk! An Anthology of Fantastically Rich and Strange Stories (Candlewick, 2011).

His story "Heads Down, Thumbs Up" appears in Year's Best Fantasy 6 (Hartwell and Cramer, eds.), and "Widows in the World" in the 2012 The Year's Best SF and Fantasy (Horton, ed.). His collaboration with Link, "Sea, Ship, Mountain, Sky" appears in the 14th The Years Best Fantasy and Horror (Datlow and Windling, eds.). Other short fiction has appeared in Polyphony 4 (Layne and Lake, eds.), Sex in the System (Tan, ed.), Salon Fantastique (Datlow and Windling, eds.), The Lone Star Stories Reader (Marin, ed.), Strange Horizons, The Third Alternative, Sci Fiction, and Aberrations. He used to work at Avenue Victor Hugo Bookshop in Boston. He lives in Massachusetts with his family.