This chapter describes the types, key implications and management strategies of massive obstetric haemorrhage. Antepartum haemorrhage due to placental abruption and intrapartum haemorrhage due to uterine rupture are associated with increased perinatal mortality. Visible blood loss greater than 2 litres, ongoing bleeding are some key pointers of massive obstetric haemorrhage. Immediate management involves active resuscitation to ensure a patient airway, breathing and maintaining circulation with intravenous fluids, blood and blood products as well as correction of coagulopathy. In women who are not acutely compromised or bleeding severely, interventional radiology can be considered. If the bleeding is predominantly from the lower segment, a total abdominal hysterectomy is warranted. Women with massive obstetric haemorrhage often need multi-organ support. Hence, transfer to an intensive care unit or high dependency unit should be considered for monitoring. Thromboprophylaxis should be considered once the coagulation parameters return to normal.