Primary pancreatic lymphoma (PPL) is a very rare tumor of the pancreas and can mimic pancreatic adenocarcinoma (PAC) clinically and radiographically. The rarity of PPL and its similarity to PAC can potentially lead to misdiagnosis of a minority of potentially curable patients. However, the management of PPL differs greatly from that of PAC. The most appropriate way of diagnosis in these patients is fine-needle aspiration biopsy before surgery. We report two cases with PPL presenting with a mass in the pancreas. One the patients was diagnosed after major open surgery and the other one was diagnosed by fine-needle aspiration biopsy.