The anatomy of the pancreatic ductal system has received attention because of its importance in pancreaticobiliary diseases. Any blockage in pancreatic ductal system needs emergency maneuver. A full understanding of the variations in pancreatic ductal pattern is essential in the diagnosis and treatment of pancreatic diseases. In an attempt to gather data on the length of main pancreatic duct the present study was carried out on the pancreas of Bangladeshi male cadaver. The descriptive cross-sectional study was carried out in the department of anatomy Dhaka Medical College from October 2008 to September 2009. Total 50 human pancreatic duct were studied. The samples were divided into 7 different age groups ranged from 10-70 years and above 70 years. Length of the main pancreatic duct was measured in fresh samples by x-ray. Length of the main pancreatic duct of formol saline fixed pancreas was measured in situ and after removal from pancreatic tissue. The results of the present study show that the length of the main pancreatic duct increases with age. In all groups length of the main pancreatic duct was more after total removal from pancreas than in situ and x-ray. The mean±SD length of main pancreatic duct was 14.34±3.10 cm, 16.13±3.26 cm, 12.88±3.28 cm in situ, after total removal and in X-ray respectively. Further studies with large sample in both sexes are recommended. Measurement of bendings of ductal course, number of pancreatic ducts and corrosion casts of pancreatic ducts are recommended. The comparison between endoscopic retrograde cholangio pancreatography (ERCP) findings and the cadaveric dissected specimen findings should also be done.