This textbook presents a broad approach to otitis media ranging from the basic to the advanced, and comprehensively reviews the diagnosis, treatment, management, and complications of patients with infections of the middle ear (OM). It has been proven that children whose hearing has been affected by otitis media suffer academically. Since their hearing is impaired, their scholastic performance deteriorates, leading to multiple health and social problems. This in turn has a cascading effect on the child's ability to perform and cope. Quite often these problems are silent and go unrecognized and misdiagnosed. The socioeconomic impact of otitis media is profound and can deeply and adversely impact a child's growth and development if not diagnosed correctly and in a timely manner. The textbook starts by covering the basics, including chapters on classification and terminology, anatomy and embryological development of the inner ear, the immune system and the inner ear, inflammation and infection, genetic predisposition, current treatment strategies including surgical and non-surgical approaches, and hearing devices. Following chapters review the current and future state of the art in OM, including chapters on tympanoplasty, temporal bone cholesteatomas, advanced hearing and balance evaluations, advanced imaging evaluations, and mastoidectomy. Textbook of Otitis Media will be a go-to resource for otorhinolaryngology residents and fellows, pediatricians, ENT surgeons, consultants, nurses, and audiologists.