Cochlear Implants & Hearing Devices represent transformative technologies designed to restore hearing in individuals with sensorineural hearing loss. Cochlear implants bypass damaged hair cells in the inner ear by directly stimulating the auditory nerve, providing auditory input to those who derive limited benefit from conventional hearing aids. Other devices, such as bone-anchored hearing systems (BAHS), middle ear implants, and advanced digital hearing aids, address various types and degrees of hearing impairment. These devices improve speech perception, language development, and overall quality of life across all age groups. Patient selection, preoperative assessment, and post-implant auditory rehabilitation are critical for optimal outcomes. Ongoing innovations in electrode design, sound processing, wireless connectivity, and AI-based noise reduction continue to enhance device performance, user experience, and accessibility to hearing care worldwide.