As of January 2016, an estimated 30 million children are on the move, both within and between countries, with or without their parents. They are part of large-scale population movements currently taking place in many parts of the world. Children on the move are those children moving for a variety of reasons, voluntary or involuntary within or between countries, with or without their parents or other primary caregivers, and whose movement might place them at risk (or at an increased risk) of inadequate care, economic or sexual exploitation, abuse, neglect or violence. Children on the move is an umbrella term that brings together a series of categories of children to highlight their common protection needs, including, children who have been trafficked, children who migrate (e.g. to pursue better life opportunities, to look for work or education or to escape exploitative or abusive situations at home, or because of other protection needs), children displaced by conflict and natural disasters and children who live and work in the streets. Movement can help children and their families improve their living standards and life opportunities. However, children do not always benefit from such potentials. Child protection policies and interventions should refocus to place the protection of the child at the centre as well as the need to support the positive aspects of mobility. Save the Children’s goal is that all children, including those on the move and in emergencies, have appropriate care either from their own families or community-based alternatives.