The topic of this paper is the Ombudsman for Children. Through my work, I tried to describe and explain in more detail the position of the child and in what way and to what extent their protection is achieved in the world and in our legal system. The rights of the child have developed through various historical periods where the position of the child has been extremely difficult, with almost no rights. Gradually, with the modernization of the system and society, more and more attention was paid to the protection of the rights and interests of women and children. Thus, numerous international documents have been adopted, the main purpose of which is to protect and preserve the welfare of children. Their application is still generally accepted today from the global to our national level. In addition to laws, regulations, decrees, programs and institutions, a special role in the protection of children in the Republic of Croatia has a children's ombudsman who specializes in exercising, protecting and promoting children's rights.