Kathryn Reiss (born December 4, 1957) is an American author of award-winning children's and young adult fiction.
After college, she lived in Bonn, Germany, as a Fulbright Scholar, and during this time, wrote the first draft of her first novel.
She is the author of many novels of suspense for middle grade and young adult readers, often including elements of time travel and the supernatural.
Pale Phoenix and Paperquake were nominated for the Mystery Writers of America's prestigious Edgar Allan Poe Award for juvenile mystery fiction, and Paperquake additionally was named one of YALSA's Popular Paperbacks for Young Adults.
She lives in Northern California with her husband and children, and teaches Creative Writing at Mills College.