Background Acute hemorrhagic pancreatitis is a life-threatening condition leading to shock and multiorgan failure. Although prevalent in the general population, the incidence during pregnancy is low, with a high maternal and fetal mortality rate. The highest incidence is in the third trimester/early postpartum period. Infectious etiology for acute hemorrhagic pancreatitis is rare with only a handful of cases following influenza infection being documented in the literature. Case presentation A 29-year-old Sinhalese pregnant lady in the third trimester presented with an upper respiratory tract infection and abdominal pain, for which she was managed with oral antibiotics. An elective caesarean section was done at 37 weeks gestation due to a past section. On postoperative day 3 she developed a fever with difficulty in breathing. Despite treatment, she succumbed to death on the sixth postoperative day. The autopsy revealed extensive fat necrosis with saponification. The pancreas was necrosed and hemorrhagic. The lungs showed features of adult respiratory distress syndrome and necrosis was observed in the liver and kidneys. Polymerase chain reaction of lungs detected influenza A virus (subtype H3). Conclusion Although rare, acute hemorrhagic pancreatitis from an infectious etiology carries risk of morbidity and mortality. Therefore, a high level of clinical suspicion must be upheld among clinicians to minimize adverse outcomes.