This toolkit is a product of the Inter-agency Working Group on Unaccompanied and Separated Children (IAWG UASC). It was produced in conjunction with the Field Handbook on Unaccompanied and Separated Children, 2016. In 2004, the Inter-agency Guiding Principles on Unaccompanied and Separated Children established the, at-the-time unique, core principles for working with such children. Subsequent emergencies have, however, highlighted the need for further technical guidance to support the implementation of these principles and to strengthen capacity building in programming for unaccompanied and separated children (UASC). This toolkit and the handbook have been developed to meet this demand. The toolkit highlights key international instruments and guidelines relating to UASC, including sample documents for use in programming.