This Toolkit has been developed by IOM in collaboration with WHO, UN AIDS, and ILO with the support of the European Union under the Mainstreaming Migration into International Cooperation and Development (MMICD) project. In the Toolkit, we explore how migration relates to the following sub-sectors: (i) service delivery, (ii) health workforce, (iii) health information systems, (iv) access to essential medicine, (v) health financing, (vi)health leadership and governance, (vii) other areas of significance. It provides practical information and tools to help development practitioners integrate migration into health interventions.