Karen Wynn Fonstad, née Wynn (April 18, 1945 - March 11, 2005) was the author of several atlas of fictional worlds.
Born in Oklahoma City to parents James and Estis Wynn, she graduated from Norman High School in Norman, Oklahoma, and then earned a B.S. degree in Physical Therapy and an M.A. in Geography, specializing in cartography, from the University of Oklahoma.
While attending the University of Oklahoma she met Todd A. Fonstad. They married on March 21, 1970 and produced two children: Dr. Mark A. Fonstad and Kristina Stingle.
Karen Wynn Fonstad died, aged 59, from complications from breast cancer.