Pediatric Urology emerged as a subspecialty as it became recognized that children with urologic disorders needed to be treated by those with specialized training. Meredith Campbell played a significant role in the development of pediatric urology with the publication of his two-volume text Pediatric Urology in 1937. Sir DI Williams, considered a central founder of the field of pediatric urology, was responsible for training many early pediatric urologists from both Europe and the United States at The Hospital for Sick Children, Great Ormond Street. The development of the Society of Pediatric Urology, the Urology Section of the American Academy of Pediatrics, and the Society of Paediatric Urological Surgeons (SPUS) were important organizations that led to both the advancement and growth of pediatric urology. ACGME Approval of pediatric urology fellowships (1991) and American Board of Urology approval of the Pediatric Urology In-Service Exam (1995) combined with the creation of a pediatric urology section in the Journal of Urology and the founding of the Journal of Pediatric Urology (2005) were all important final steps leading to the ABU to approve subspecialty certification in Pediatric Urology.