The Country Impact Report is a collection of examples of collaboration between the WHO Regional Office for Europe and countries in the WHO European Region – one story for each of the 53 Member States. These short summaries were developed together with countries, based on interviews with people directly involved in the initiatives described. They outline the impact of WHO’s work with Member States, identify lessons learned from this collaboration and offer inspiration for other countries. Every example is linked to advancing one or several of the core priorities and flagship initiatives of the European Programme of Work, 2020–2025 – “United Action for Better Health”, and complements the Report of the Regional Director for 2023–2024. The Country Impact Report was produced for the 74th session of the WHO Regional Committee for Europe.