Abstract : The sciatic nerve is a branch of the lumbosacral plexus. The sciatic nerve can divide into its terminal branches at the variable level and according to that variation found in its course and its terminal branches. During the routine study of the lower limb, it was found that two terminal branches of the sciatic nerve, the tibial nerve, and the common peroneal nerve emerged below the piriformis muscle through the greater sciatic foramen due to higher division of the sciatic nerve or due to non-fusion of its both components in the pelvic cavity, both branches run together in the gluteal region and in the posterior compartment of thigh and supply muscles of this compartment before diverging at superior angle of the popliteal fossa. Surgeons should have knowledge about this to prevent damage to it and its terminal branches during various surgical procedures. It also helps Medical and paramedical staff to know the compression of nerves.