Ted Kosmatka is an American writer. His short fiction has been nominated for both the Nebula Award and the Theodore Sturgeon Memorial Award. As a video game writer at Valve, he was one of the primary writers of Dota 2 lore. He is no longer at Valve and is working on other projects.

Kosmatka’s work has been reprinted in nine Year’s Best anthologies and translated into a dozen languages. His scripts have been performed on stage in Indiana and New York. He is co-winner of the 2010 Asimov’s Readers’ Choice Award. His novel The Games was nominated for a Locus Award for Best First Novel. Ted’s latest novel, The Flicker Men, was nominated in 2017 for the Sakura Award in Japan.