Hypertensive disorders remain one the major causes of maternal and fetal morbidity and death. It is also a leading cause of preterm birth now known to be a risk factor in remote cardiovascular disease. Despite this, the hypertensive disorders remain marginally studied, and their management is commonly controversial. Chesley’s Hypertensive Disorders in Pregnancy remains one of the beacons to guide this field, recognized for its uniqueness and utility. The Third Edition continues this tradition, focusing on prediction, prevention, and management for clinicians, and is an essential reference text for clinical and basic investigators alike. Differing from other texts devoted to preeclampsia, it covers the whole gamut of high blood pressure, not just preeclampsia.