While gallstones and alcoholism are widely known to be the most common causative agents of acute pancreatitis, about 10% of cases are thought to be caused by infectious microorganisms. These microorganisms include viruses (e.g. mumps, Coxsackie B, and hepatitis), bacteria (e.g. Mycoplasma pneumoniae and leptospirosis), and parasites (e.g. Ascaris lumbricoides, Fasciola hepatica, and hydatid disease). Each organism causes acute pancreatitis through diverse mechanisms. The review is primarily conducted in an attempt to provide a better understanding of the possibility of acute pancreatitis presenting as a complication relating to these organisms, and the aim is to guide future diagnoses, management, and predictions of complications.