This chapter covers the Electromyography. Its instrumentation, uses, study of electromyograph, spontaneous potential, insertional activity, motor unit action potential and recruitment pattern, abnormal potentials, spontaneous activity, positive sharp waves, fasciculation potential, and repetitive discharges have been explained in details. Nerve conduction velocity, its instrumentation, sensory nerve conduction, velocity, motor nerve conduction velocity, methods of stimulation and recording have also been included. The H reflex, F wave, and their clinical significance have also been explained. Kinesiological Electromyography, surface and fine wire recording, placement of electrodes and its clinical importance have been explained.