Background: Foodware and food packaging materials are a source of human exposure to chemicals because chemicals can transfer (or: migrate) from the packaging into the food. Some of these migrating food contact chemicals (FCCs) are regularly discussed due to their hazardous properties (e.g., bisphenols and phthalates). However, systematic approaches have not been applied to identify and prioritize the hazards of all known FCCs. Methodology: The FCCprio List was compiled to systematically identify and prioritize FCCs based on their hazard properties and exposure potential. The list was created following the published, evidence-based methodology by the PlastChem report. The methodology was slightly modified to include only harmonized hazard classifications for broader agreement and to focus on human health hazards, given their primary relevance for exposure through food contact materials (FCMs). In detail, publicly available and officially recognized hazard information was collected for all known FCCs. Using these data, FCCs were placed on the FCCprio List if they have any of the following hazards: persistence, bioaccumulation, mobility, carcinogenicity, mutagenicity, reproductive toxicity, specific target organ toxicity upon repeated exposure, and/or endocrine disruption. The prioritized FCCs were subsequently ranked into four tiers based on their evidence for human exposure via FCMs, as reported in the published FCCmigex and FCChumon databases. Details can be found in the 'FCCprio: Methodology' document provided in this repository. Summary results: In total, 1’222 FCCs were identified as hazardous and placed on the FCCprio List and then internally ranked based on their relevance for human exposure from FCMs. Tiers 1 to 4 contain 94, 264, 224, and 640 FCCs, respectively. Tier 1 chemicals have the highest evidence for human exposure from FCMs and include, for example, phthalates, metals and metalloids, and per- and polyfluoroalkyl substances (PFAS). Furthermore, a total of 1’173 FCCs might be of concern, due to their environmental hazards, their lower hazard category, or an indication of the considered hazards from notified data sources. Of the 15’159 known FCCs, 12’317 (81%) currently lack any relevant hazard data and could thus not be prioritized. Detailed results and all chemicals on the FCCprio List can be found in the 'FCCprio List' Excel file provided in this repository. Periodic future updates will be made to the FCCprio List as new scientific information becomes available. These updates will be added to this repository under separate version numbers.