This guide provides a set of guidance and reference materials to support EU+ countries regarding family tracing, as well as a mapping of current practices of family tracing across EU+ countries. The guide is constructed around four interlinked pillars: introduction to the topic by outlining the circumstances of family tracing; a visual outline of the family tracing process, including applicable principles and guarantees; overview of current family tracing practices across the EU+ countries; conclusions and recommendations promoting consistent standards and guarantees. Reference materials in the guide include glossary of relevant terms, legal framework, list of relevant projects and initiatives, relevant publications, and a mapping of the practice of EU+ countries.