This report explores how migrant integration – especially social and civic engagement – is measured across the Nordic countries. Reviewing national statistical practices and international sources, it reveals diverse approaches but also key gaps. While formal indicators such as political participation and naturalisation are tracked, more subjective dimensions like belonging, trust, and discrimination often remain under-measured. The study highlights methodological challenges, from differing definitions and data collection methods to low migrant survey participation and language barriers. International surveys add insights but are constrained by small samples. The report calls for stronger cross-national exchange and more multidimensional frameworks, with targeted indicators and better resources, to build a fuller picture of integration and support evidence-based policy.