This paper highlights the Church’s interest in matters relating to certain groups of children on the move, including migrant, refugee, unaccompanied, trafficked and internally displaced children. It reflects the perspective of Catholic social teaching relating to children on the move; explores several immigration and policy areas and their impact on children; and presents specific principles for the development of future immigration and refugee laws and policies and use in advocacy work on behalf of immigrant and refugee children. This paper is being used by the Bishops’ Committee on Migration to further consider public policy initiatives and has been issued with the expressed approval of the chairman.