Although international research has accumulated significant evidence on inclusive practices and their benefits for children, how this translates into early childhood settings is often unsatisfactory within and across countries. Against the background of general acceptance of the principles incorporated in the Convention on the Rights of Persons With Disabilities, we examine how 3 countries who are signatories to this convention, Australia, Greece, and Malaysia, are making progress towards inclusion in early childhood. Using an implementation science framework, the key components of enabling contexts, research-based practices, and effective implementation supports are explored. In this framework, each of these components is essential for achieving the desired outcomes of inclusion. The country profiles of Australia, Greece, and Malaysia are examined (including similarities and differences in legislation, policies, early childhood services, and practices) in an effort to support understanding of factors facilitating and challenging early childhood inclusion.