ENThe article presents a comparative analysis of the constitutional protection of children’s rights in Poland and Lithuania, with particular emphasis on mechanisms preventing child abuse. The aim of the paper is to examine the scope and nature of constitutional protection of children in both countries, and to identify similarities and differences in institutional solutions. The analysis shows that although Poland and Lithuania base their child protection systems on common international foundations, they differ in the constitutional scope of these rights and the mechanisms of their implementation. The Polish model features an extensive catalogue of constitutional guarantees and a developed institutional system, whereas the Lithuanian model relies more on statutory regulation and centralized coordination. In both cases, social outrage following tragic cases of child abuse triggered significant legislative reforms that strengthened child protection frameworks. Keywords: constitution, children’s rights, Poland, Lithuania.