The family is a social unit which has its norms for speaking, viewing, acting, and believing, thus providing a cornerstone for language socialisation and language development. This chapter begins with a brief introduction to the theoretical conceptualisation of family language policy (FLP) currently used by most researchers. It then provides a discussion of the major contributions to the field by focusing on three major themes: FLP and language-in-education policy; FLP and language ideology; and linguistic practices and the processes of language change. This discussion is followed by an overview of recent developments in research methodology employed in the field. Finally, future directions in research resulting from increasing transnational migration and evolving political environments are outlined.