In 1985, the Department of Pediatrics of the Tehran University of Medical Sciences organized a series of conferences to increase the level of knowledge of practicing doctors in pediatrics. A few speakers from abroad had been invited for these conferences. The great success of these conferences brought up the idea of organizing a pediatric congress with international contribution. Since then an annually International Congress of Pediatrics is held in Tehran with participation of renowned specialists from all over the world which serves as a fruitful source of interchange of knowledge and collegial relationship between pediatricians irrespective of the political borders and ideologies. The 30th International Congress will be held in October 18-21, 2018 in Children’s Medical Center affiliated to Tehran University of Medical Sciences, Tehran, Iran.