The Inter-Council Network (ICN) has long advocated for civil society and youth representation on official Canadian delegations to international meetings. The 2017 High-Level Political Forum (HLPF) on sustainable development, which took place in July in New York City, was the first occasion that this call was heard and was launched back to the ICN to manage the selection process. The HLPF 2017 Civil Society and Youth Delegate Participation - An ICN Synthesis Report, includes: an outline of the ICN's role, process, and resources invested; a summary of the experience and outcomes of the civil society (CSO) representatives and youth participation as official delegates; and recommendations for similar processes in the future, for the organizing entity, Global Affairs Canada as well as future CSO and youth delegates. The report was informed by the ICN's own experience, reports submitted by the four delegates to the ICN (as part of their agreement with the ICN), as well as their feedback through a satisfaction survey.