Katherine Addison is the pen name of Sarah Monette, a fantasy and horror author and adjunct faculty member of Ashland University's low-residency MFA program.

Addison was born in Oak Ridge, Tennessee, one of the three secret cities of the Manhattan Project. She received her BA from Case Western Reserve University, her MA and PhD from the University of Wisconsin-Madison.

Addison has published more than fifty short stories, three collaborations with author Elizabeth Bear, and seven solo novels, including The Goblin Emperor, which won the 2015 Locus Award for Best Fantasy Novel and was a finalist for the Hugo, Nebula, and World Fantasy Award; and The Angel of the Crows, which was nominated for the 2021 Locus Award.

She currently lives near Madison, Wisconsin with her spouse and cats.