The Convention on the Rights of the Child (CRC) is the most widely adopted international human rights treaty of the time, and almost all Muslim States are parties to the treaty. This chapter reviews the various reservations entered by Muslim States and distinguishes between those based on Islamic law (Shari‘ah) and those based on domestic laws or national policies of the State concerned. It then examines whether Islamic law is the main obstacle to an effective implementation of the CRC by Muslim States. The observation is made on the basis of the three alleged hard-core problems: Non-discrimination, freedom of religion, and adoption. Special emphasis is placed on the Malaysian experience in the implementation of the Convention. Malaysia does not rely on Islamic law, but instead invokes domestic laws and national policies to enter reservations.  Keywords:CRC, Islamic law, Malaysia, Muslim states