The knowledge of the anatomy of a region becomes very important for doctors of different specialties both in making accurate diagnosis and to give a proper treatment for an individual. Radiologists need to understand the existence of variations in an artery in order to reduce the error in making diagnosis. The ulnar artery is the major artery of the front of forearm and the knowledge of its anatomy and variations in its origin is necessary in all specialties. The study was conducted in Department of Anatomy, Government Stanley Medical College, Chennai and 50 upper limbs comprising from 25 adult human cadavers preserved by embalming with formalin were studied by conventional dissection method. The ulnar artery arises as the terminal branch of brachial artery in significant proportion. The ulnar artery may arise proximal to the elbow or high up in the axilla. 96% of the specimens the ulnar artery arises from the brachial artery as a terminal branch. High origins, the origin of ulnar artery from lower third brachial artery was seen in 2% and from the axillary artery in 2%.