Aim to study the formation of median nerve. 100 upper limbs of 50 donated embalmed cadavers (45 males & 5 females) of age group ranging from 70 to 80 years were dissected in the department of Anatomy at K.J. Somaiya Medical College, Sion, Mumbai, INDIA. The variant formation of median nerve was observed in 2 specimens. The musculo - vascular pattern in the arm was also observed. The photographs of the variation of the formation of median nerve were taken for proper documentation. The variant formation of median nerve by three lateral roots was observed in 2 specimens. The findings were noted after thorough and meticulous dissection of the upper limbs of both sides (axilla, arm, forearm and palm) of 50 cadavers. The variations were unilateral and there was no associated musculo-vascular variation. The presences of such type of variations are clinically important for surgeons, orthopaedicians and anaesthetist performing pain management therapies on the upper limb.