The purpose of this symposium issue of the American Journal of Comparative Law is twofold. First, it serves to showcase some of the contributions to the workshop "Parental Care and the Best Interests of the Child in Muslim Countries," which, under the auspices of the Max Planck Institute for Comparative and International Private Law, was convened at the Centre Jacques Berque in Rabat, Morocco, April 1–5, 2015. Second, the articles collected here aim to introduce readers to the larger project of the Max Planck Working Group on Child Law in Muslim Countries, which was established in the summer of 2014 and held its inaugural meeting at the workshop in Rabat. The overall aim of the Working Group is to explore how parenthood is being negotiated in Muslim countries and to examine the legal concepts that reflect changing perceptions of parenthood and that have emerged over the course of the last few decades.