The Muslim Identity survey (MI-ID) aims to map the diversity in individuals, groups and experiences among young 1.5 to 3rd generation migrants in the Netherlands who identify as Muslim. Crucially, there is currently no (Dutch) survey which includes a migrant group big enough to properly investigate these processes among Muslim migrants. It is the aim of this project to collect data among Muslim migrant groups and investigate their integration and disintegration processes within the Netherlands. A crucial novel element is the particular focus and inclusion of an ‘experimental treatment with societal hostility’. Based on the MI-ID data collection, important scientific questions on the role of religion, hostility and cultural and political integration can be answered. The data file includes adult Muslims between 18 and 45 years of age, roughly Generation Y and Z. In terms of migration history, the data include respondents from generation 1.5 (younger than 13 upon arrival) through generation 3 (at least one grandparent with a migration background). Moreover, only respondents with Moroccan and/or Turkish roots were included. Respondent needed to fulfill each of the three criterions mentioned above to be included in the final MI-ID dataset.