Jeffrey Thomas is an American author of weird fiction, the creator of the acclaimed setting Punktown. Books in the Punktown universe include the short story collections Punktown, Voices from Punktown, Punktown: Shades of Grey (with his brother, Scott Thomas), and Ghosts of Punktown. Novels in that setting include Deadstock, Blue War, Monstrocity, Health Agent, Everybody Scream!, Red Cells, and The New God. Thomas’s other short story collections include The Unnamed Country, Gods of a Nameless Country, The Endless Fall, Haunted Worlds, Worship the Night, Thirteen Specimens, Nocturnal Emissions, Doomsdays, Terror Incognita, Unholy Dimensions, AAAIIIEEE!!!, Honey Is Sweeter Than Blood, Carrion Men, Voices from Hades, The Return of Enoch Coffin, and Entering Gosston. His other novels include The American, Boneland, Subject 11, Letters From Hades, The Fall of Hades, The Exploded Soul, The Nought, Thought Forms, Beyond the Door, Lost in Darkness, and A Nightmare on Elm Street: The Dream Dealers.

His work has been reprinted in The Year’s Best Horror Stories XXII (editor Karl Edward Wagner), The Year’s Best Fantasy and Horror #14 (editors Ellen Datlow and Terri Windling), and Year’s Best Weird Fiction #1 (editors Laird Barron and Michael Kelly). At NecronomiCon 2024 Thomas received the Robert Bloch Award for his contributions to weird fiction.

Though he considers Viet Nam his second home, Thomas lives in Massachusetts.