The Diaspora Mapping Toolkit builds on IOM’s rich experience of over 150 diaspora mappings implemented across diverse contexts, this Toolkit presents a systematic, comprehensive yet very flexible and agile approach to conducting diaspora mappings in differing contexts. By following the proposed clear guidance on how to collect and analyse data on diaspora communities, decision makers will have the possibility to create more strategic and evidence-based policies empowering diaspora members to contribute and engage thus maximizing their contributions to development.