Janet Asimov, born Janet Opal Jeppson, was an American science fiction writer, psychiatrist, and psychoanalyst. She often wrote under the pen name J.O. Jeppson. She collaborated with her husband, Isaac Asimov, on several works, including the Norby series, which was aimed at young readers. Janet’s writing often incorporated themes of human identity and psychoanalysis, reflecting her professional background.

She earned her medical degree from New York University Medical School and practiced psychiatry and psychoanalysis for many years. After Isaac Asimov’s death in 1992, Janet continued his syndicated popular-science column in the Los Angeles Times. She passed away in 2019 at the age of 92.