Key Redfield Jamison (1946-) is an American psychologist and science writer who is herself affected by manic depression, also known as bipolar disorder.

"Manic-Depressive Illness" (with Frederick K. Goodwin) is one of the classic textbooks on bipolar disorder.

She is currently Professor of Psychiatry at the Johns Hopkins University School of Medicine.

Works include:

• "An Unquiet Mind" (autobiography), ISBN 0679763309
• "Manic-Depressive Illness" (with Frederick K. Goodwin) ISBN 0195039343
• "Touched with Fire: Manic-Depressive Illness and the Artistic Temperament" (1993) (includes a study of Lord Byron's illness), ISBN 068483183X
• "Night Falls Fast: Understanding Suicide", ISBN 0375701478

Jamison is the recipient of the National Mental Health Association's William Styron Award (1995), the American Suicide Foundation Research Award (1996), the Community Mental Health Leadership Award (1999), and a 2001 MacArthur Fellowhip recipient.