The therapeutic potential of magnetic energy has been a subject of long-standing interest within both conventional and alternative medical practice. Numerous devices utilizing magnetic fields, ranging from the dubious to truly innovative, have claimed a wide variety of clinical benefits. The electric field effect induced by a changing magnetic field appears to be more valuable in research and therapy than the magnetic field effects described from permanent magnets. Magnetic stimulation of the sacral nerve roots continues to evolve as an alternative to transcutaneous electrical neuromodulation for the diagnosis and treatment of bladder and pelvic floor dysfunction. The conduction characteristics of magnetic energy confer several practical advantages for its use as a non-invasive treatment modality. Moreover, its clinical application may provide theoretical insight into the neurobiology of the lower urinary tract. This chapter examines the use of extracorporeal electromagnetic stimulation for the treatment of urinary incontinence and bladder disease, and provides a historical overview of the therapeutic application of electromagnetic energy.