According to international human rights treaties, what rights do family members, parents, and children have in family engagement in child welfare decision-making? A sociolegal analytical approach produces a typology of rights, then applies the typology to eight countries' approaches to family engagement to show that strong bundles of rights are available in some countries, but not in others. This study reveals international treaties have articulated many rights necessary to family engagement, but some rights are missing. (Contains 2 tables.)